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Field Descriptions
87 matching records found.
Label Query: Genus = "Conyza", Species = "canadensis"
Asteraceae
1. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Benton County:
Rattlesnake Springs.
Elev. 700 ft. 46° 30' N, 119° 43' W; T12N R25E S29.
Riparian vegetation growing in moist soil. Esquatzel Silt Loam. Phenology: Flowers & Fruits. Origin: Native.
WTU 260312
Joan T. O’Farrell 72-245    19 Aug 1972
with Thomas P. O’Farrell
1. Conyza canadensis (L.) Cronquist
Database ID
17968 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
260312 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Joan T. O’Farrell 
Collection #
72-245 
Other Collectors
Thomas P. O’Farrell 
Date Collected
19 Aug 1972 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Benton 
Locality
Rattlesnake Springs. 
Elevation
700 ft. 
Coordinates
46° 30' N, 119° 43' W; T12N R25E S29 
Site Description
Riparian vegetation growing in moist soil. Esquatzel Silt Loam. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
2. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Island County:
Hoypus Point, Deception Pass State Park, Whidbey Island.
48.39389°, -122.6475°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Flowers & Fruits. Origin: Native.
WTU 38659
Harold W. Smith 1460    31 Jul 1936
2. Conyza canadensis (L.) Cronquist
Database ID
17969 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
38659 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
2. Conyza canadensis (L.) Cronquist.
    1948.  
Type Notes
 
Collector
Harold W. Smith 
Collection #
1460 
Other Collectors
 
Date Collected
31 Jul 1936 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Island 
Locality
Hoypus Point, Deception Pass State Park, Whidbey Island. 
Elevation
 
Coordinates
48.39389°, -122.6475° 
Site Description
 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
3. Conyza canadensis (L.) Cronquist
U.S.A., Washington, King County:
West bank of Duwamish River, south Seattle.
47.510421°, -122.294435°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Sand flat. A common weed. Phenology: Flowers & Fruits. Origin: Native.
WTU 296732
Walter J. Eyerdam 6674    15 Sep 1952
3. Conyza canadensis (L.) Cronquist
Database ID
17970 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296732 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Walter J. Eyerdam 
Collection #
6674 
Other Collectors
 
Date Collected
15 Sep 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
West bank of Duwamish River, south Seattle. 
Elevation
 
Coordinates
47.510421°, -122.294435° 
Site Description
Sand flat. 
Specimen Notes
A common weed. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
4. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Klickitat County:
E of Rock Creek.
45.749849°, -120.439509°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Moist, sandy area with Cirsium sp., Sonchus asper. Phenology: Flowers & Fruits. Origin: Native.
WTU 334904
Eliza Habegger RC 278    20 Aug 1997
4. Conyza canadensis (L.) Cronquist
Database ID
17971 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
334904 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Eliza Habegger 
Collection #
RC 278 
Other Collectors
 
Date Collected
20 Aug 1997 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Klickitat 
Locality
E of Rock Creek. 
Elevation
 
Coordinates
45.749849°, -120.439509° 
Site Description
Moist, sandy area with Cirsium sp., Sonchus asper. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
5. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Okanogan County:
Colville Indian Reservation, Pe-el Creek Burn Study.
Elev. 2500 ft. T32N R30E S22 & 27. Datum: WGS 84. Coordinate uncertainty: 800 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Slope 5% north. Soil gravelly sand & sandy loam. With Gayaphytum sp., Cryptontha sp., Phacelia sp., Achillea lanulosa, Spiraea sp., Stipa columbiana, Ceanothus velutinus, Hieracium sp. Phenology: Flowers & Fruits. Origin: Native.
WTU 324015
G. Garrison 73-56    19 Jul 1956
with D. Wooldridge, R. Gibbons
5. Conyza canadensis (L.) Cronquist
Database ID
17972 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
324015 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
2. Conyza canadensis (L.) Cronquist.
    Annotated by Gerald S. Strickler, 1977.  
Type Notes
 
Collector
G. Garrison 
Collection #
73-56 
Other Collectors
D. Wooldridge, R. Gibbons 
Date Collected
19 Jul 1956 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Okanogan 
Locality
Colville Indian Reservation, Pe-el Creek Burn Study. 
Elevation
2500 ft. 
Coordinates
T32N R30E S22 & 27 
Site Description
Slope 5% north. Soil gravelly sand & sandy loam. With Gayaphytum sp., Cryptontha sp., Phacelia sp., Achillea lanulosa, Spiraea sp., Stipa columbiana, Ceanothus velutinus, Hieracium sp. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
6. Conyza canadensis (L.) Cronquist
U.S.A., Washington, San Juan County:
Friday Harbor, San Juan Island; road running east from ferry landing, ca 0.25 miles from landing.
48.53528°, -123.00528°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Open gravelly area, cleared below condominiums, with Conyza canadensis and Trifolium. Infrequent here, and in San Juans generally. Phenology: Flowers & Fruits. Origin: Native.
WTU 325008
Scott R. Atkinson 490    15 Aug 1992
6. Conyza canadensis (L.) Cronquist
Database ID
17973 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
325008 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Scott R. Atkinson 
Collection #
490 
Other Collectors
 
Date Collected
15 Aug 1992 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
Friday Harbor, San Juan Island; road running east from ferry landing, ca 0.25 miles from landing. 
Elevation
 
Coordinates
48.53528°, -123.00528° 
Site Description
Open gravelly area, cleared below condominiums, with Conyza canadensis and Trifolium. 
Specimen Notes
Infrequent here, and in San Juans generally. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
7. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Clark County:
Paradise Point State Beach, near confluence of Lewis and Columbia Rivers.
Elev. 5-10 ft. 45° 52' N, 122° 43' W.
Plants tall. Phenology: Flowers & Fruits. Origin: Native.
WTU 345466
Sarah Gage G&R 836    13 Sep 1992
with Sharon Rodman
7. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17980 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
345466 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Sarah Gage 
Collection #
G&R 836 
Other Collectors
Sharon Rodman 
Date Collected
13 Sep 1992 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Clark 
Locality
Paradise Point State Beach, near confluence of Lewis and Columbia Rivers. 
Elevation
5-10 ft. 
Coordinates
45° 52' N, 122° 43' W 
Site Description
 
Specimen Notes
Plants tall. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
8. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Snohomish County:
Along roadside S of Marysville.
48.05194°, -122.17583°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Flowers & Fruits. Origin: Native.
WTU 313291
Mildred Arnot s.n.    22 Sep 1986
8. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17981 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
313291 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Mildred Arnot 
Collection #
s.n. 
Other Collectors
 
Date Collected
22 Sep 1986 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Along roadside S of Marysville. 
Elevation
 
Coordinates
48.05194°, -122.17583° 
Site Description
 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
9. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Stevens County:
Near edge of Rd. N slope of Flagstaff Mt.
Elev. 4000 ft. T39 R39 S5. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by Crystal Shin. Coordinate Source: Digital Map.
Sandy soil. Phenology: Flowers & Fruits. Origin: Native.
WTU 196437
Monita Engvall 195    7 Aug 1958
9. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17982 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
196437 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Monita Engvall 
Collection #
195 
Other Collectors
 
Date Collected
7 Aug 1958 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Stevens 
Locality
Near edge of Rd. N slope of Flagstaff Mt. 
Elevation
4000 ft. 
Coordinates
T39 R39 S5 
Site Description
Sandy soil. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
10. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Chelan County:
Near Wenatchee.
47.42361°, -120.30917°. Datum: WGS84. Coordinate uncertainty: 5000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Margin of pond. Phenology: Flowers & Fruits. Origin: Native.
WTU 7882JWT
J. William Thompson 9325    6 Jul 1933
10. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17983 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
7882JWT 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
J. William Thompson 
Collection #
9325 
Other Collectors
 
Date Collected
6 Jul 1933 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Chelan 
Locality
Near Wenatchee. 
Elevation
 
Coordinates
47.42361°, -120.30917° 
Site Description
Margin of pond. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
11. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Klickitat County:
North side of Rowland Lake about 3.7 airline miles east of Bingen.
Elev. 24 m. T3N R11E S36. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by John Bassett. Coordinate Source: Nat. Geog. TOPO!.
Rocky lake shore, with Salix, Tillaea, Coreopsis, Aster, Phalaris, Lindernia, Xanthium, Eleocharis. Ray flowers yellow, disk flowers red. Phenology: Flowers & Fruits. Origin: Native.
WTU 318236
Richard R. Halse 3975    8 Nov 1989
11. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17984 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
318236 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Richard R. Halse 
Collection #
3975 
Other Collectors
 
Date Collected
8 Nov 1989 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Klickitat 
Locality
North side of Rowland Lake about 3.7 airline miles east of Bingen. 
Elevation
24 m. 
Coordinates
T3N R11E S36 
Site Description
Rocky lake shore, with Salix, Tillaea, Coreopsis, Aster, Phalaris, Lindernia, Xanthium, Eleocharis. 
Specimen Notes
Ray flowers yellow, disk flowers red. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
12. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Pend Oreille County:
Lake Calispell, 3 miles southwest of Usk.
48.283179°, -117.324774°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Wet shore of lake. Phenology: Flowers & Fruits. Origin: Native.
WTU 68431
F. O. Kreager 315    28 Jul 1902
12. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17985 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
68431 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
F. O. Kreager 
Collection #
315 
Other Collectors
 
Date Collected
28 Jul 1902 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pend Oreille 
Locality
Lake Calispell, 3 miles southwest of Usk. 
Elevation
 
Coordinates
48.283179°, -117.324774° 
Site Description
Wet shore of lake. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
13. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Stevens County:
Near junction of Colville and Columbia Rivers.
48.572811°, -118.086806°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Moist meadow. Phenology: Flowers & Fruits. Origin: Native.
WTU 66773
L. Boner 174    23 Jun 1939
with V. Weldert
13. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17986 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
66773 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
L. Boner 
Collection #
174 
Other Collectors
V. Weldert 
Date Collected
23 Jun 1939 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Stevens 
Locality
Near junction of Colville and Columbia Rivers. 
Elevation
 
Coordinates
48.572811°, -118.086806° 
Site Description
Moist meadow. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
14. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Yakima County:
Tieton.
46.70222°, -120.75417°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Flowers & Fruits. Origin: Native.
WTU 33633
George Neville Jones 2250    10 Sep 1926
14. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
17987 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
33633 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
George Neville Jones 
Collection #
2250 
Other Collectors
 
Date Collected
10 Sep 1926 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Yakima 
Locality
Tieton. 
Elevation
 
Coordinates
46.70222°, -120.75417° 
Site Description
 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
15. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Island County:
Whidbey Island; roadside along Hill Road near Ebey's Landing parking lot.
Elev. 20 ft. 48° 11.5' N, 122° 42.4' W.
Other plants: Sambucus racemosa, Heracleum lanatum, Symphoricarpos alba, Holodiscus discolor. Disk flowers yellow, ray flowers white; common; gravelly soil. Phenology: Flowers. Origin: Native.
WTU 357099
Don Knoke 727    10 Sep 2004
15. Conyza canadensis (L.) Cronquist
Database ID
27826 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
357099 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Ben Legler, 6 2004.  
Type Notes
 
Collector
Don Knoke 
Collection #
727 
Other Collectors
 
Date Collected
10 Sep 2004 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Island 
Locality
Whidbey Island; roadside along Hill Road near Ebey's Landing parking lot. 
Elevation
20 ft. 
Coordinates
48° 11.5' N, 122° 42.4' W 
Site Description
Other plants: Sambucus racemosa, Heracleum lanatum, Symphoricarpos alba, Holodiscus discolor. 
Specimen Notes
Disk flowers yellow, ray flowers white; common; gravelly soil. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
16. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Snohomish County:
Intersection of 8th St and railroad tracks on southwest side of Marysville.
Elev. 26 ft. 48° 3' 19" N, 122° 10' 45" W. Datum: NAD 27.
Dry gravelly soil of RR right-of-way. Flowers yellowish-white with slight pink tinge; common. Phenology: Flowers. Origin: Native.
WTU 382748
Ben Legler 2296    16 Aug 2004
16. Conyza canadensis (L.) Cronquist
Database ID
111166 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
382748 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Ben Legler, 2004.  
Type Notes
 
Collector
Ben Legler 
Collection #
2296 
Other Collectors
 
Date Collected
16 Aug 2004 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Intersection of 8th St and railroad tracks on southwest side of Marysville. 
Elevation
26 ft. 
Coordinates
48° 3' 19" N, 122° 10' 45" W 
Site Description
Dry gravelly soil of RR right-of-way. 
Specimen Notes
Flowers yellowish-white with slight pink tinge; common. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
17. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Lane County:
Off of State Highway 58 at the Hampton Boat Landing, 14.6 miles southeast of Dexter; shoreline of the Middle Fork Willamette River.
Elev. 918 ft. 43° 48' 58" N, 122° 35' 18" W.
Associated with Bidens, Gnaphalium, Trifolium, Polygonum, Phalaris, Rumex. Flowers white. Phenology: Flowers. Origin: Native.
WTU 356039
Richard R. Halse 6473    20 Oct 2003
17. Conyza canadensis (L.) Cronquist
Database ID
147126 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
356039 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Richard R. Halse 
Collection #
6473 
Other Collectors
 
Date Collected
20 Oct 2003 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Lane 
Locality
Off of State Highway 58 at the Hampton Boat Landing, 14.6 miles southeast of Dexter; shoreline of the Middle Fork Willamette River. 
Elevation
918 ft. 
Coordinates
43° 48' 58" N, 122° 35' 18" W 
Site Description
Associated with Bidens, Gnaphalium, Trifolium, Polygonum, Phalaris, Rumex. 
Specimen Notes
Flowers white. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
18. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Jackson County:
2 miles north of Rogue River on West Evans Creek Road.
Elev. 1000 ft. T36S R4W S16. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Gravelly soil; associated with Verbascum thapsus, Chenopodium botrys and Gnaphalium. Rays white; plants up to 1 meter in height. Phenology: Flowers. Origin: Native.
WTU 208001
La Rea J. Dennis 2332    20 Aug 1961
18. Conyza canadensis (L.) Cronquist
Database ID
147133 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
208001 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Remarks: Erigeron canadensis L. 
Type Notes
 
Collector
La Rea J. Dennis 
Collection #
2332 
Other Collectors
 
Date Collected
20 Aug 1961 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Jackson 
Locality
2 miles north of Rogue River on West Evans Creek Road. 
Elevation
1000 ft. 
Coordinates
T36S R4W S16 
Site Description
Gravelly soil; associated with Verbascum thapsus, Chenopodium botrys and Gnaphalium. 
Specimen Notes
Rays white; plants up to 1 meter in height. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
19. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Oregon, Marion County:
Along South Riverside Road 0.2 miles south of the east end of the Independence Bridge over the Willamette River.
Elev. 147 ft. T8S R4W S28. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by John Bassett. Coordinate Source: Digital map.
Edge of a field with Epilobium, Rumex, Daucus, Cirsium, Trifolium pratense. Phenology: Flowers. Origin: Native.
WTU 305295
Richard R. Halse 2566    6 Sep 1982
19. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
147136 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
305295 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Richard R. Halse 
Collection #
2566 
Other Collectors
 
Date Collected
6 Sep 1982 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Marion 
Locality
Along South Riverside Road 0.2 miles south of the east end of the Independence Bridge over the Willamette River. 
Elevation
147 ft. 
Coordinates
T8S R4W S28 
Site Description
Edge of a field with Epilobium, Rumex, Daucus, Cirsium, Trifolium pratense. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
20. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Oregon, Grant County:
Along small tributary to the South Fork of the John Day River, 8 miles south of Dayville.
Elev. 2700 ft. T14S R26E S1. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
In moderately moist soil. Rays white. Phenology: Flowers. Origin: Native.
WTU 152582
Arthur Cronquist 7615    25 Jul 1953
20. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
147153 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
152582 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Arthur Cronquist 
Collection #
7615 
Other Collectors
 
Date Collected
25 Jul 1953 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Grant 
Locality
Along small tributary to the South Fork of the John Day River, 8 miles south of Dayville. 
Elevation
2700 ft. 
Coordinates
T14S R26E S1 
Site Description
In moderately moist soil. 
Specimen Notes
Rays white. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
21. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Curry County:
Along the Illinois River, at Oak Flat, 3 miles south of Agnes.
T35S R11W S29. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Edge of woods. Phenology: Flowers. Origin: Native.
WTU 296731
W. H. Baker 11553    14 Jun 1954
21. Conyza canadensis (L.) Cronquist
Database ID
147160 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296731 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
W. H. Baker 
Collection #
11553 
Other Collectors
 
Date Collected
14 Jun 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Curry 
Locality
Along the Illinois River, at Oak Flat, 3 miles south of Agnes. 
Elevation
 
Coordinates
T35S R11W S29 
Site Description
Edge of woods. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
22. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Josephine County:
Along highway 4 miles below Caves.
Horseweed. Phenology: Flowers. Origin: Native.
WTU 298436
William H. Baker 692    3 Sep 1949
with George C. Ruhle
22. Conyza canadensis (L.) Cronquist
Database ID
147165 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
298436 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
692 
Other Collectors
George C. Ruhle 
Date Collected
3 Sep 1949 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Josephine 
Locality
Along highway 4 miles below Caves. 
Elevation
 
Coordinates
 
Site Description
 
Specimen Notes
Horseweed. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
23. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Curry County:
Along the Illinois River, at Oak Flat, 3 miles south of Agnes.
T35S R11W S29. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Edge of woods. Phenology: Flowers. Origin: Native.
WTU 300298
W. H. Baker 11553    14 Jun 1954
23. Conyza canadensis (L.) Cronquist
Database ID
147168 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
300298 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
W. H. Baker 
Collection #
11553 
Other Collectors
 
Date Collected
14 Jun 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Curry 
Locality
Along the Illinois River, at Oak Flat, 3 miles south of Agnes. 
Elevation
 
Coordinates
T35S R11W S29 
Site Description
Edge of woods. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
24. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Josephine County:
Along lower Cave Creek.
Dry ground. Phenology: Flowers. Origin: Native.
WTU 298300
William H. Baker 832    9 Jul 1950
with George C. Ruhle
24. Conyza canadensis (L.) Cronquist
Database ID
147171 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
298300 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
832 
Other Collectors
George C. Ruhle 
Date Collected
9 Jul 1950 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Josephine 
Locality
Along lower Cave Creek. 
Elevation
 
Coordinates
 
Site Description
Dry ground. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
25. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Curry County:
Along the Illinois River at Oak Flat, 3 miles south of Agness.
T35S R11W S29. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Edge of wood. Phenology: Flowers. Origin: Native.
WTU 298518
William H. Baker 11553    14 Jun 1954
25. Conyza canadensis (L.) Cronquist
Database ID
147174 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
298518 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
11553 
Other Collectors
 
Date Collected
14 Jun 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Curry 
Locality
Along the Illinois River at Oak Flat, 3 miles south of Agness. 
Elevation
 
Coordinates
T35S R11W S29 
Site Description
Edge of wood. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
26. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Kittitas County:
Yakima Training Center; Hanson Creek, behind (west of) dike, Training Area 5.
Elev. 640 ft. 731400E, 5183500N. Coordinate uncertainty: 1200 meters. Georeferenced by Joseph Stormer.
Along creek, assoicated with Castilleja exilis, Festuca pratensis, Bidens cernua, Polypogon monspeliensis, Lythrum salicaria, Ambrosia acanthicarpa. Phenology: Flowers. Origin: Native.
WTU 358625
Joy Mastrogiuseppe 6357    27 Aug 1991
26. Conyza canadensis (L.) Cronquist
Database ID
147177 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
358625 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Joy Mastrogiuseppe 
Collection #
6357 
Other Collectors
 
Date Collected
27 Aug 1991 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Kittitas 
Locality
Yakima Training Center; Hanson Creek, behind (west of) dike, Training Area 5. 
Elevation
640 ft. 
Coordinates
731400E, 5183500N 
Site Description
Along creek, assoicated with Castilleja exilis, Festuca pratensis, Bidens cernua, Polypogon monspeliensis, Lythrum salicaria, Ambrosia acanthicarpa. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
27. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Okanogan County:
Colville Indian Reservation, Pe-el Creek Burn Study.
Elev. 2500 ft. T32N R30E S22 & 27. Datum: WGS 84. Coordinate uncertainty: 800 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Gravelly sand; slope north 5%; associated with Chenopodium sp., Gayaphytum sp., Amoranthus sp. Common. Phenology: Flowers. Origin: Native.
WTU 323990
G. Garrison 73-56    19 Jul 1956
with D. Wooldridge, R. Gibbons
27. Conyza canadensis (L.) Cronquist
Database ID
147193 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
323990 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.
    Annotated by Gerald S. Strickler.  
Type Notes
 
Collector
G. Garrison 
Collection #
73-56 
Other Collectors
D. Wooldridge, R. Gibbons 
Date Collected
19 Jul 1956 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Okanogan 
Locality
Colville Indian Reservation, Pe-el Creek Burn Study. 
Elevation
2500 ft. 
Coordinates
T32N R30E S22 & 27 
Site Description
Gravelly sand; slope north 5%; associated with Chenopodium sp., Gayaphytum sp., Amoranthus sp. 
Specimen Notes
Common. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
28. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Klickitat County:
Rock Creek.
T4N R18E S10. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
West-facing rocky canyon slope, with Apocynum sp., Bromus tectorum, Stipa thurberiana, Achillea millefolium, Lagophylla ramosissima. Phenology: Flowers. Origin: Native.
WTU 334969
Eliza Habegger RC250    18 Jul 1997
28. Conyza canadensis (L.) Cronquist
Database ID
147200 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
334969 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Eliza Habegger 
Collection #
RC250 
Other Collectors
 
Date Collected
18 Jul 1997 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Klickitat 
Locality
Rock Creek. 
Elevation
 
Coordinates
T4N R18E S10 
Site Description
West-facing rocky canyon slope, with Apocynum sp., Bromus tectorum, Stipa thurberiana, Achillea millefolium, Lagophylla ramosissima. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
29. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Cowlitz County:
Toutle Mudflow northwest of crater breach, Mount Saint Helens.
46.34444°, -122.5275°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Upland. Phenology: Flowers. Origin: Native.
WTU 334728
Jon Titus s.n.    10 Sep 1994
29. Conyza canadensis (L.) Cronquist
Database ID
147204 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
334728 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Jon Titus 
Collection #
s.n. 
Other Collectors
 
Date Collected
10 Sep 1994 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Cowlitz 
Locality
Toutle Mudflow northwest of crater breach, Mount Saint Helens. 
Elevation
 
Coordinates
46.34444°, -122.5275° 
Site Description
Upland. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
30. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Wahkiakum County:
Rock east shore of Grays Bay, Columbia River. At Pigeon Bluff, below Altoona-Pillar Rock Road.
Elev. 6 ft. 46° 16.5' N, 123° 40.7' W; T9N R8W S9.
Damp mowed meadow, low ground. Dry roadside weed. Phenology: Flowers & Fruits. Origin: Native.
WTU 370903
Peter F. Zika 22281    30 Aug 2005
with David Giblin, Cathy Maxwell, Ben Legler
30. Conyza canadensis (L.) Cronquist
Database ID
154916 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
370903 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by B. Legler, 2005. Sources: H&C.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
22281 
Other Collectors
David Giblin, Cathy Maxwell, Ben Legler 
Date Collected
30 Aug 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Wahkiakum 
Locality
Rock east shore of Grays Bay, Columbia River. At Pigeon Bluff, below Altoona-Pillar Rock Road. 
Elevation
6 ft. 
Coordinates
46° 16.5' N, 123° 40.7' W; T9N R8W S9 
Site Description
Damp mowed meadow, low ground. 
Specimen Notes
Dry roadside weed. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
31. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Clark County:
Frenchman's Bar Waterfront Park on shore of Columbia River, west of Vancouver.
Elev. 10 ft. 45° 41.023' N, 122° 45.989' W.
Sandy beach, dry soil, backed by Populus and Salix; sparsely vegetated. Phenology: Fruits. Origin: Native.
WTU 370842
Ben Legler 3094    21 Sep 2005
with David Giblin
31. Conyza canadensis (L.) Cronquist
Database ID
154977 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
370842 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 2005. Sources: H&C.  
Type Notes
 
Collector
Ben Legler 
Collection #
3094 
Other Collectors
David Giblin 
Date Collected
21 Sep 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Clark 
Locality
Frenchman's Bar Waterfront Park on shore of Columbia River, west of Vancouver. 
Elevation
10 ft. 
Coordinates
45° 41.023' N, 122° 45.989' W 
Site Description
Sandy beach, dry soil, backed by Populus and Salix; sparsely vegetated. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
32. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Skagit County:
Bayview - Edison Road. Edge of agricultural field and adjacent drainage swale at roadside edge.
Elev. 6 ft. 48° 28.037' N, 122° 27.629' W. Datum: WGS 84. Coordinate uncertainty: 3 meters. Coordinate Source: GPS.
Highly disturbed ground with Cirsium arvense and Phalaris arundinacea in upland, Typha latifolia in swale. Common along roadside edge. Phenology: Flowers & Fruits. Origin: Native.
WTU 371787
David Giblin 721    15 Sep 2006
32. Conyza canadensis (L.) Cronquist
Database ID
155341 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
371787 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 15 2007. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
721 
Other Collectors
 
Date Collected
15 Sep 2006 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Skagit 
Locality
Bayview - Edison Road. Edge of agricultural field and adjacent drainage swale at roadside edge. 
Elevation
6 ft. 
Coordinates
48° 28.037' N, 122° 27.629' W 
Site Description
Highly disturbed ground with Cirsium arvense and Phalaris arundinacea in upland, Typha latifolia in swale. 
Specimen Notes
Common along roadside edge. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
33. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Lane County:
East of Goodpasture Island Road, between Willamette River and Delta Highway, Eugene.
Elev. 393 ft. 44° 4.8' N, 123° 6.5' W.
Annual in partial shade of thicket, with Populus balsamifera, Salix piperi, Cornus sericea, Rubus armeniacus. Phenology: Fruits. Origin: Native.
WTU 365119
Peter F. Zika 22642    24 Oct 2005
with E. R. Alverson
33. Conyza canadensis (L.) Cronquist
Database ID
156662 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
365119 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
22642 
Other Collectors
E. R. Alverson 
Date Collected
24 Oct 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Lane 
Locality
East of Goodpasture Island Road, between Willamette River and Delta Highway, Eugene. 
Elevation
393 ft. 
Coordinates
44° 4.8' N, 123° 6.5' W 
Site Description
 
Specimen Notes
Annual in partial shade of thicket, with Populus balsamifera, Salix piperi, Cornus sericea, Rubus armeniacus. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
34. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Kittitas County:
Along Yakima River at mouth of Taneum Creek, 1/4 mile upstream from BNSF Dudley railroad bridge.
Elev. 1695 ft. 47° 5.505' N, 120° 42.599' W; T19N R17E S33.
Level; dry river rocks below high water line. Other plants: Rosa woodsii, Prunus virginiana, Populus trichocarpa, Symphoricarpos alba. Ray flowers white, disk yellow; common. Phenology: Flowers & Fruits. Origin: Native.
WTU 364793
Don Knoke 946    5 Aug 2005
34. Conyza canadensis (L.) Cronquist
Database ID
156967 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
364793 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Don Knoke.  
Type Notes
 
Collector
Don Knoke 
Collection #
946 
Other Collectors
 
Date Collected
5 Aug 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Kittitas 
Locality
Along Yakima River at mouth of Taneum Creek, 1/4 mile upstream from BNSF Dudley railroad bridge. 
Elevation
1695 ft. 
Coordinates
47° 5.505' N, 120° 42.599' W; T19N R17E S33 
Site Description
Level; dry river rocks below high water line. Other plants: Rosa woodsii, Prunus virginiana, Populus trichocarpa, Symphoricarpos alba. 
Specimen Notes
Ray flowers white, disk yellow; common. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
35. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Boise County:
One mile south of Horse Shoe Bend Summit.
43.907264°, -116.198261°. Coordinate uncertainty: 3200 meters.
Dry gravelly hillside. Phenology: Fruits. Origin: Native.
WTU 296698
William H. Baker 9997    31 Aug 1952
35. Conyza canadensis (L.) Cronquist
Database ID
161193 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296698 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
9997 
Other Collectors
 
Date Collected
31 Aug 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Boise 
Locality
One mile south of Horse Shoe Bend Summit. 
Elevation
 
Coordinates
43.907264°, -116.198261° 
Site Description
Dry gravelly hillside. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
36. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Elmore County:
About 2 miles up Falls Creek from Anderson Ranch Dam Reservoir.
43.3575°, -115.44778°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Fruits. Origin: Native.
WTU 296699
D.J. Thompson 21    24 Jul 1954
36. Conyza canadensis (L.) Cronquist
Database ID
161194 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296699 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
D.J. Thompson 
Collection #
21 
Other Collectors
 
Date Collected
24 Jul 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Elmore 
Locality
About 2 miles up Falls Creek from Anderson Ranch Dam Reservoir. 
Elevation
 
Coordinates
43.3575°, -115.44778° 
Site Description
 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
37. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Idaho, Payette County:
10 miles south of Fruitland.
43.862942°, -116.91556°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Roadside. Common. Phenology: Fruits. Origin: Native.
WTU 296747
William H. Baker 11281    2 Sep 1953
37. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
161195 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296747 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
William H. Baker 
Collection #
11281 
Other Collectors
 
Date Collected
2 Sep 1953 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Payette 
Locality
10 miles south of Fruitland. 
Elevation
 
Coordinates
43.862942°, -116.91556° 
Site Description
Roadside. 
Specimen Notes
Common. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
38. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Fremont County:
Four miles south of Last Chance, Island Park.
T11N R43E S5. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Roadside weed. Phenology: Fruits. Origin: Native.
WTU 296746
William H. Baker 9939    25 Aug 1952
38. Conyza canadensis (L.) Cronquist
Database ID
161198 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296746 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
9939 
Other Collectors
 
Date Collected
25 Aug 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Fremont 
Locality
Four miles south of Last Chance, Island Park. 
Elevation
 
Coordinates
T11N R43E S5 
Site Description
 
Specimen Notes
Roadside weed. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
39. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Adams County:
Along Little Salmon River, 7 miles south of New Meadows.
44.871187°, -116.274976°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Wet grassy meadow. Phenology: Flowers & Fruits. Origin: Native.
WTU 298516
W. H. Baker 12174    28 Jul 1954
39. Conyza canadensis (L.) Cronquist
Database ID
161201 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
298516 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
W. H. Baker 
Collection #
12174 
Other Collectors
 
Date Collected
28 Jul 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Adams 
Locality
Along Little Salmon River, 7 miles south of New Meadows. 
Elevation
 
Coordinates
44.871187°, -116.274976° 
Site Description
Wet grassy meadow. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
40. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Idaho County:
Clearwater Forest; Badger Creek, Lochsa River Canyon; about 40 miles southwest of Missoula, Montana.
Elev. 3900 ft. 46.504525°, -114.822919°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Along logging and skid roads in clear-cut areas. Phenology: Flowers. Origin: Native.
WTU 234553
Peter F. Stickney 848    24 Jul 1963
40. Conyza canadensis (L.) Cronquist
Database ID
161203 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
234553 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter F. Stickney 
Collection #
848 
Other Collectors
 
Date Collected
24 Jul 1963 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Idaho 
Locality
Clearwater Forest; Badger Creek, Lochsa River Canyon; about 40 miles southwest of Missoula, Montana. 
Elevation
3900 ft. 
Coordinates
46.504525°, -114.822919° 
Site Description
Along logging and skid roads in clear-cut areas. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
41. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
Canada, British Columbia
Mirror Lake, Kootenay.
Phenology: Fruits. Origin: Native.
WTU 140033
J. R. Anderson 590    22 Jul 1907
41. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
161204 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
140033 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
    Annotated by A. C., 1951.
3. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
    Annotated by S. B..  
Type Notes
 
Collector
J. R. Anderson 
Collection #
590 
Other Collectors
 
Date Collected
22 Jul 1907 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
Mirror Lake, Kootenay. 
Elevation
 
Coordinates
 
Site Description
 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
42. Conyza canadensis (L.) Cronquist
U.S.A., Montana
Lothrop Timber Sale Area. 5.5 miles southeast of Alberton.
Elev. 4800 ft.
Along logging road. Phenology: Flowers. Origin: Native.
WTU 237524
Peter F. Stickney 689    18 Jul 1962
42. Conyza canadensis (L.) Cronquist
Database ID
161205 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
237524 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter F. Stickney 
Collection #
689 
Other Collectors
 
Date Collected
18 Jul 1962 
Verbatim Date
 
Country
U.S.A. 
State or Province
Montana 
County
 
Locality
Lothrop Timber Sale Area. 5.5 miles southeast of Alberton. 
Elevation
4800 ft. 
Coordinates
 
Site Description
Along logging road. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
43. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Boise County:
One mile south of Horse Shoe Bend Summit.
43.907264°, -116.198261°. Coordinate uncertainty: 3200 meters.
Dry gravelly hillside. Phenology: Fruits. Origin: Native.
WTU 299993
William H. Baker 9997    31 Aug 1952
43. Conyza canadensis (L.) Cronquist
Database ID
161206 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
299993 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
9997 
Other Collectors
 
Date Collected
31 Aug 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Boise 
Locality
One mile south of Horse Shoe Bend Summit. 
Elevation
 
Coordinates
43.907264°, -116.198261° 
Site Description
Dry gravelly hillside. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
44. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Bonneville County:
Edge of Fall Creek, at Mineral Springs.
T1N R43E S9. Datum: WGS 84. Coordinate uncertainty: 5000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Fruits. Origin: Native.
WTU 299989
William H. Baker 9709    7 Aug 1952
44. Conyza canadensis (L.) Cronquist
Database ID
161207 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
299989 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
9709 
Other Collectors
 
Date Collected
7 Aug 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Bonneville 
Locality
Edge of Fall Creek, at Mineral Springs. 
Elevation
 
Coordinates
T1N R43E S9 
Site Description
 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
45. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Bonneville County:
Swan Valley, along Palisades Creek, 3 miles southeast of Irwin.
T1N R44E S25. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Dry hillside, sagebrush-grass zone. Phenology: Flowers & Fruits. Origin: Native.
WTU 299994
William H. Baker 9680    6 Aug 1952
45. Conyza canadensis (L.) Cronquist
Database ID
161208 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
299994 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Erigeron canadensis L.
2. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
9680 
Other Collectors
 
Date Collected
6 Aug 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Bonneville 
Locality
Swan Valley, along Palisades Creek, 3 miles southeast of Irwin. 
Elevation
 
Coordinates
T1N R44E S25 
Site Description
Dry hillside, sagebrush-grass zone. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
46. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Adams County:
Along Little Salmon River, 7 miles south of New Meadows.
44.871187°, -116.274976°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Wet grassy meadow. Phenology: Flowers. Origin: Native.
WTU 296748
William H. Baker 12174    28 Jul 1954
46. Conyza canadensis (L.) Cronquist
Database ID
161209 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296748 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
12174 
Other Collectors
 
Date Collected
28 Jul 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Adams 
Locality
Along Little Salmon River, 7 miles south of New Meadows. 
Elevation
 
Coordinates
44.871187°, -116.274976° 
Site Description
Wet grassy meadow. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
47. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Boundary County:
Deep Creek, 7 miles south of Bonners Ferry.
48.625258°, -116.385072°. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Railroad embankment. Phenology: Fruits. Origin: Native.
WTU 296750
William H. Baker 13855    9 Aug 1955
47. Conyza canadensis (L.) Cronquist
Database ID
161210 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296750 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
13855 
Other Collectors
 
Date Collected
9 Aug 1955 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Boundary 
Locality
Deep Creek, 7 miles south of Bonners Ferry. 
Elevation
 
Coordinates
48.625258°, -116.385072° 
Site Description
Railroad embankment. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
48. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Bonner County:
Priest Lake, junction of Dickensheet Road.
48.49056°, -116.9025°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Woods. Phenology: Flowers. Origin: Native.
WTU 296749
William H. Baker 13653    31 Jul 1955
48. Conyza canadensis (L.) Cronquist
Database ID
161211 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
296749 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
13653 
Other Collectors
 
Date Collected
31 Jul 1955 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Bonner 
Locality
Priest Lake, junction of Dickensheet Road. 
Elevation
 
Coordinates
48.49056°, -116.9025° 
Site Description
Woods. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
49. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Adams County:
Along Little Salmon River, 7 miles south of New Meadows.
44.871187°, -116.274976°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Wet grassy meadow. Phenology: Flowers & Fruits. Origin: Native.
WTU 300258
W. H. Baker 12174    28 Jul 1954
49. Conyza canadensis (L.) Cronquist
Database ID
161212 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
300258 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
W. H. Baker 
Collection #
12174 
Other Collectors
 
Date Collected
28 Jul 1954 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Adams 
Locality
Along Little Salmon River, 7 miles south of New Meadows. 
Elevation
 
Coordinates
44.871187°, -116.274976° 
Site Description
Wet grassy meadow. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
50. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Bonner County:
Priest Lake, junction of Dickensheet Road.
48.49056°, -116.9025°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Woods. Phenology: Flowers. Origin: Native.
WTU 300219
W. H. Baker 13653    31 Jul 1955
50. Conyza canadensis (L.) Cronquist
Database ID
161213 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
300219 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
W. H. Baker 
Collection #
13653 
Other Collectors
 
Date Collected
31 Jul 1955 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Bonner 
Locality
Priest Lake, junction of Dickensheet Road. 
Elevation
 
Coordinates
48.49056°, -116.9025° 
Site Description
Woods. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
51. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Bonner County:
Priest Lake, junction of Dickensheet Road.
48.49056°, -116.9025°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Woods. Phenology: Flowers. Origin: Native.
WTU 298517
William H. Baker 13653    31 Jul 1955
51. Conyza canadensis (L.) Cronquist
Database ID
161214 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
298517 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
William H. Baker 
Collection #
13653 
Other Collectors
 
Date Collected
31 Jul 1955 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Bonner 
Locality
Priest Lake, junction of Dickensheet Road. 
Elevation
 
Coordinates
48.49056°, -116.9025° 
Site Description
Woods. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
52. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Alaska
Southeastern Alaska. Chichagof Island, Tenakee Inlet, southern side. Corner Bay, southwest shore.
Open disturbed area near the logging camp dock. Phenology: Fruits. Origin: Native.
WTU 325733
Kitty LaBounty 345    14 Aug 1982
52. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
161215 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
325733 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Kitty LaBounty 
Collection #
345 
Other Collectors
 
Date Collected
14 Aug 1982 
Verbatim Date
 
Country
U.S.A. 
State or Province
Alaska 
County
 
Locality
Southeastern Alaska. Chichagof Island, Tenakee Inlet, southern side. Corner Bay, southwest shore. 
Elevation
 
Coordinates
 
Site Description
Open disturbed area near the logging camp dock. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
53. Conyza canadensis (L.) Cronquist
U.S.A., Idaho, Boise County:
Boise National Forest, Forest Service Road 384, Crooked River Trail.
Elev. 4880 ft. 43° 55.043' N, 115° 35.572' W; T7N R7E S26.
Dry hillside along river with seeps, Salix, Alnus, Cornus along river. On sandy shore. Phenology: Flowers & Fruits. Origin: Native.
WTU 351600
J. F. Smith 4074    19 Aug 2001
53. Conyza canadensis (L.) Cronquist
Database ID
161216 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
351600 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
J. F. Smith 
Collection #
4074 
Other Collectors
 
Date Collected
19 Aug 2001 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Boise 
Locality
Boise National Forest, Forest Service Road 384, Crooked River Trail. 
Elevation
4880 ft. 
Coordinates
43° 55.043' N, 115° 35.572' W; T7N R7E S26 
Site Description
Dry hillside along river with seeps, Salix, Alnus, Cornus along river. 
Specimen Notes
On sandy shore. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
54. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Idaho, Benewah County:
Along south side of Lake Chatcolet, 10 miles west of Plummer.
Elev. 2200 ft. T46N R3W. Coordinate uncertainty: 3200 meters.
Roadside cut. Rays white. Phenology: Flowers & Fruits. Origin: Native.
WTU 182118
Arthur Cronquist 5971    17 Jul 1949
with Quentin Jones
54. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.
Database ID
161217 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
182118 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq. 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. glabrata (Gray) Cronq.  
Type Notes
 
Collector
Arthur Cronquist 
Collection #
5971 
Other Collectors
Quentin Jones 
Date Collected
17 Jul 1949 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Benewah 
Locality
Along south side of Lake Chatcolet, 10 miles west of Plummer. 
Elevation
2200 ft. 
Coordinates
T46N R3W 
Site Description
Roadside cut. 
Specimen Notes
Rays white. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
55. Conyza canadensis (L.) Cronquist
U.S.A., Montana, Park County:
Five miles north of Gardiner.
45.10123°, -110.706453°. Coordinate uncertainty: 8000 meters.
Phenology: Fruits. Origin: Native.
WTU 97985
C. L. Hitchcock 13570    13 Aug 1945
with C. V. Muhlick
55. Conyza canadensis (L.) Cronquist
Database ID
161218 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
97985 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Sources: Cronquist.  
Type Notes
 
Collector
C. L. Hitchcock 
Collection #
13570 
Other Collectors
C. V. Muhlick 
Date Collected
13 Aug 1945 
Verbatim Date
 
Country
U.S.A. 
State or Province
Montana 
County
Park 
Locality
Five miles north of Gardiner. 
Elevation
 
Coordinates
45.10123°, -110.706453° 
Site Description
 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
56. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Whitman County:
Highway 128, 1/4 mile west of the confluence of the Snake and Clearwater Rivers.
T11N R46E S16. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Shoulder of highway, with Centaurea solstitialis, Lactuca serriola, Salsola tragus, and Tribulus terrestris. Phenology: Fruits. Origin: Native.
WTU 368035
Jeff Walker 331    2 Sep 2007
56. Conyza canadensis (L.) Cronquist
Database ID
161973 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
368035 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Jeff Walker.  
Type Notes
 
Collector
Jeff Walker 
Collection #
331 
Other Collectors
 
Date Collected
2 Sep 2007 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Whitman 
Locality
Highway 128, 1/4 mile west of the confluence of the Snake and Clearwater Rivers. 
Elevation
 
Coordinates
T11N R46E S16 
Site Description
Shoulder of highway, with Centaurea solstitialis, Lactuca serriola, Salsola tragus, and Tribulus terrestris. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
57. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Snohomish County:
Along Snohomish River north of Langus Riverfront Park northeast of Everett.
T29N R5E S16. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Gravelly dike edge with Melilotus alba, Cirsium vulgare, Lotus corniculatus, Vivia [Vicia] hirsuta, Sisymbrium officinale and Sonchus asper. [Located in teaching collection]. Phenology: Flowers & Fruits. Origin: Native.
WTU 327947; Barcode: WTU-V-005612
M. Arnot 635    21 Jul 1993
57. Conyza canadensis (L.) Cronquist
Database ID
166537 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
327947 
Barcode
WTU-V-005612 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
M. Arnot 
Collection #
635 
Other Collectors
 
Date Collected
21 Jul 1993 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Along Snohomish River north of Langus Riverfront Park northeast of Everett. 
Elevation
 
Coordinates
T29N R5E S16 
Site Description
Gravelly dike edge with Melilotus alba, Cirsium vulgare, Lotus corniculatus, Vivia [Vicia] hirsuta, Sisymbrium officinale and Sonchus asper. 
Specimen Notes
[Located in teaching collection]. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
58. Conyza canadensis (L.) Cronquist
U.S.A., Washington, King County:
Seattle, Herring's House Park, western bank of Duwamish River.
47.510421°, -122.294435°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
In and near northern end of park in restoration area. Common in upland areas. Phenology: Fruits. Origin: Native.
WTU 369622
Jeff Walker 77    26 Jul 2003
58. Conyza canadensis (L.) Cronquist
Database ID
166988 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
369622 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Jeff Walker 
Collection #
77 
Other Collectors
 
Date Collected
26 Jul 2003 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Seattle, Herring's House Park, western bank of Duwamish River. 
Elevation
 
Coordinates
47.510421°, -122.294435° 
Site Description
In and near northern end of park in restoration area. 
Specimen Notes
Common in upland areas. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
59. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Skamania County:
Junction of Route 14 and east end of Prindle Road.
Elev. 49 ft. 45° 35.5' N, 122° 8.6' W; T1N R5E S11.
Dry roadsides, with Hypericum perforatum, north side of road, full sun. 1 meter tall annual, occasional. Phenology: Fruits. Origin: Native.
WTU 369155
Peter F. Zika 22565    12 Oct 2005
59. Conyza canadensis (L.) Cronquist
Database ID
167261 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
369155 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
22565 
Other Collectors
 
Date Collected
12 Oct 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Skamania 
Locality
Junction of Route 14 and east end of Prindle Road. 
Elevation
49 ft. 
Coordinates
45° 35.5' N, 122° 8.6' W; T1N R5E S11 
Site Description
Dry roadsides, with Hypericum perforatum, north side of road, full sun. 
Specimen Notes
1 meter tall annual, occasional. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
60. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Skagit County:
South shore of Ship Harbor, at Glasgow Way, Fidalgo Island, Puget Sound.
Elev. 32 ft. 48° 30.2' N, 122° 39.9' W; T35N R1E S22.
Recently bulldozed ground, full sun, with Agrostis stolonifera, Agrostis capillaris, Crepis capillaris. Common. Phenology: Fruits. Origin: Native.
WTU 369467
Peter F. Zika 22367    22 Sep 2005
60. Conyza canadensis (L.) Cronquist
Database ID
167481 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
369467 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
22367 
Other Collectors
 
Date Collected
22 Sep 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Skagit 
Locality
South shore of Ship Harbor, at Glasgow Way, Fidalgo Island, Puget Sound. 
Elevation
32 ft. 
Coordinates
48° 30.2' N, 122° 39.9' W; T35N R1E S22 
Site Description
Recently bulldozed ground, full sun, with Agrostis stolonifera, Agrostis capillaris, Crepis capillaris. 
Specimen Notes
Common. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
61. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Grant County:
Babcock Bench. Parking pullout to gravel road leading to cliffs above river.
Elev. 1243 ft. 47.20419°, -119.97954°. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Highly disturbed roadside edge. Common on edge of gravel access road. Phenology: Remnants. Origin: Native.
WTU 380779
David Giblin 1460    30 Apr 2008
61. Conyza canadensis (L.) Cronquist
Database ID
169632 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
380779 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 14 2008. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
1460 
Other Collectors
 
Date Collected
30 Apr 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Babcock Bench. Parking pullout to gravel road leading to cliffs above river. 
Elevation
1243 ft. 
Coordinates
47.20419°, -119.97954° 
Site Description
Highly disturbed roadside edge. 
Specimen Notes
Common on edge of gravel access road. 
Phenology
Remnants 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
62. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Grant County:
Potholes Wildlife Area. Sand Dunes Road. From roadside to 0.5 kilometers west.
Elev. 1039 ft. 47.07359° N, 119.3371° W. Datum: WGS 84. Coordinate uncertainty: 10 meters.
Stabilized sand dune community with wetland habitat in swales; swales dominated by Schoenoplectus acutus and Typha latifolia; both dunes and swales invaded by non-natives. Scattered along edge of moist swale. Phenology: Fruits. Origin: Native.
WTU 380412
David Giblin 2295    28 Aug 2008
62. Conyza canadensis (L.) Cronquist
Database ID
174255 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
380412 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 8 2009. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
2295 
Other Collectors
 
Date Collected
28 Aug 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Potholes Wildlife Area. Sand Dunes Road. From roadside to 0.5 kilometers west. 
Elevation
1039 ft. 
Coordinates
47.07359° N, 119.3371° W 
Site Description
Stabilized sand dune community with wetland habitat in swales; swales dominated by Schoenoplectus acutus and Typha latifolia; both dunes and swales invaded by non-natives. 
Specimen Notes
Scattered along edge of moist swale. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
63. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Grant County:
Turnout east side of road along Morgan Lake Road.
Elev. 826 ft. 46.91834° N, 119.23901° W. Datum: WGS 84. Coordinate uncertainty: 6 meters.
Riparian corridor in basalt rimrock canyon dominated by Schoenoplectus acutus, Solidago sp., and Kochia scoparia. Scattered throughout riparian strip. Phenology: Flowers & Fruits. Origin: Native.
WTU 380326
David Giblin 2418    4 Sep 2008
63. Conyza canadensis (L.) Cronquist
Database ID
174384 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
380326 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 27 2009. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
2418 
Other Collectors
 
Date Collected
4 Sep 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Turnout east side of road along Morgan Lake Road. 
Elevation
826 ft. 
Coordinates
46.91834° N, 119.23901° W 
Site Description
Riparian corridor in basalt rimrock canyon dominated by Schoenoplectus acutus, Solidago sp., and Kochia scoparia. 
Specimen Notes
Scattered throughout riparian strip. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
64. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Grant County:
Turnout east side of road along Morgan Lake Road.
Elev. 826 ft. 46.91834° N, 119.23901° W. Datum: WGS 84. Coordinate uncertainty: 6 meters.
Riparian corridor in basalt rimrock canyon dominated by Schoenoplectus acutus, Solidago sp., and Bassia hyssopifolia. Uncommon in standing water adjacent to stream. Phenology: Fruits. Origin: Native.
WTU 380337
David Giblin 2425    4 Sep 2008
64. Conyza canadensis (L.) Cronquist
Database ID
174390 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
380337 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 4 2009. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
2425 
Other Collectors
 
Date Collected
4 Sep 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Turnout east side of road along Morgan Lake Road. 
Elevation
826 ft. 
Coordinates
46.91834° N, 119.23901° W 
Site Description
Riparian corridor in basalt rimrock canyon dominated by Schoenoplectus acutus, Solidago sp., and Bassia hyssopifolia. 
Specimen Notes
Uncommon in standing water adjacent to stream. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
65. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Clatsop County:
Julia Butler Hanson Refuge for the Columbia White-tailed Deer. Island off the east tip of Tenasillahe Island.
Elev. 0 ft. 46.20953° N, 123.43145° W. Datum: WGS 84. Coordinate uncertainty: 5 meters.
Sandy-shored island with freshwater intertidal wetland and dredge spoils habitat. Periphery of wetland dominated by Populus and Salix. Common in sandy, open soil. Phenology: Flowers & Fruits. Origin: Native.
WTU 395922
Cathy Maxwell 08-40    9 Sep 2008
with Joe Arnett, Kathleen Sayce, David Giblin
65. Conyza canadensis (L.) Cronquist
Database ID
174984 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
395922 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Giblin, 29 2009. Sources: FNA.  
Type Notes
 
Collector
Cathy Maxwell 
Collection #
08-40 
Other Collectors
Joe Arnett, Kathleen Sayce, David Giblin 
Date Collected
9 Sep 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Clatsop 
Locality
Julia Butler Hanson Refuge for the Columbia White-tailed Deer. Island off the east tip of Tenasillahe Island. 
Elevation
0 ft. 
Coordinates
46.20953° N, 123.43145° W 
Site Description
Sandy-shored island with freshwater intertidal wetland and dredge spoils habitat. Periphery of wetland dominated by Populus and Salix. 
Specimen Notes
Common in sandy, open soil. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
66. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Whatcom County:
Intersection of Highway 542 and Mission Road.
Elev. 475 ft. UTM Zone 10, 547456E, 5405626N; T38N R4E S6. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
The edge of the pavement. Other plants: Phalaris araundiaca, Hypochaeris radicata, Tanacetum vulgare, Digitaria sanquinalis, Crepis capillaris, Epilobium (sp). Growing at the edge of the pavement. Phenology: Flowers & Fruits. Origin: Native.
WTU 381112
James Duemmel 10-521    17 Sep 2010
66. Conyza canadensis (L.) Cronquist
Database ID
178039 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
381112 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by James Duemmel.  
Type Notes
 
Collector
James Duemmel 
Collection #
10-521 
Other Collectors
 
Date Collected
17 Sep 2010 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Whatcom 
Locality
Intersection of Highway 542 and Mission Road. 
Elevation
475 ft. 
Coordinates
UTM Zone 10, 547456E, 5405626N; T38N R4E S6 
Site Description
The edge of the pavement. Other plants: Phalaris araundiaca, Hypochaeris radicata, Tanacetum vulgare, Digitaria sanquinalis, Crepis capillaris, Epilobium (sp). 
Specimen Notes
Growing at the edge of the pavement. 
Phenology
Flowers & Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
67. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Klickitat County:
Port of Klickitat, Bingen.
45.714842°, -121.464517°. Datum: WGS 84. Coordinate uncertainty: 1500 meters. Georeferenced by Dan Post. Coordinate Source: GeoLocate.
Weedy wasteland. Phenology: Flowers. Origin: Native.
WTU 391533
David Gross 860    19 Aug 2012
67. Conyza canadensis (L.) Cronquist
Database ID
187061 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
391533 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Gross.  
Type Notes
 
Collector
David Gross 
Collection #
860 
Other Collectors
 
Date Collected
19 Aug 2012 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Klickitat 
Locality
Port of Klickitat, Bingen. 
Elevation
 
Coordinates
45.714842°, -121.464517° 
Site Description
Weedy wasteland. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
68. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Franklin County:
Scootenay Reservoir. Northeast corner where Coyan Road crosses spillway.
Elev. 276 m. 46.72211° N, 119.0363° W. Datum: WGS 84. Coordinate uncertainty: 5 meters. Georeferenced by Maria Yousoufian.
Disturbed area near spillway that includes riparian area, roadside edge, and abandoned agricultural field. Common along edge of road. Phenology: Fruits. Origin: Native.
WTU 408209; Barcode: WTU-V-021413
David Giblin 3243    29 Sep 2009
68. Conyza canadensis (L.) Cronquist
Database ID
189158 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
408209 
Barcode
WTU-V-021413 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Cynthia Riskin, 5 2013. Sources: FNA.  
Type Notes
 
Collector
David Giblin 
Collection #
3243 
Other Collectors
 
Date Collected
29 Sep 2009 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Franklin 
Locality
Scootenay Reservoir. Northeast corner where Coyan Road crosses spillway. 
Elevation
276 m. 
Coordinates
46.72211° N, 119.0363° W 
Site Description
Disturbed area near spillway that includes riparian area, roadside edge, and abandoned agricultural field. 
Specimen Notes
Common along edge of road. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
69. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Adams County:
At the edge of parking lot at the Conoco gas station off Pence Road. Northwest of the intersection of HIghway 26 and Highway 395.
46.79386° N, 118.75444° W.
Growing with Salsola tragus. Common. Phenology: Fruits. Origin: Native.
WTU 395940
Jeff Walker 675    31 Aug 2013
69. Conyza canadensis (L.) Cronquist
Database ID
189282 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
395940 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Jeff Walker.  
Type Notes
 
Collector
Jeff Walker 
Collection #
675 
Other Collectors
 
Date Collected
31 Aug 2013 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Adams 
Locality
At the edge of parking lot at the Conoco gas station off Pence Road. Northwest of the intersection of HIghway 26 and Highway 395. 
Elevation
 
Coordinates
46.79386° N, 118.75444° W 
Site Description
Growing with Salsola tragus. 
Specimen Notes
Common. 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
70. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Snohomish County:
Tulare Beach.
48.101763°, -122.343202°. Datum: WGS 84. Coordinate uncertainty: 650 meters. Georeferenced by Maria Yousoufian. Coordinate Source: GeoLocate.
Garden weed. Phenology: Flowers and Fruits. Origin: Native.
WTU 402048; Barcode: WTU-V-010068
Clayton Haberman s.n.    28 Aug 2003
70. Conyza canadensis (L.) Cronquist
Database ID
2449382 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
402048 
Barcode
WTU-V-010068 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Clayton Haberman 
Collection #
s.n. 
Other Collectors
 
Date Collected
28 Aug 2003 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Tulare Beach. 
Elevation
 
Coordinates
48.101763°, -122.343202° 
Site Description
Garden weed. 
Specimen Notes
 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
71. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Yakima County:
Southeast side of Mount Adams. Department of Natural Resources Quarry.
Elev. 1242 m. 46° 7.819' N, 121° 20.257' W. Coordinate Source: Field notes.
Phenology: Flowers. Origin: Introduced.
WTU
David Biek 05-200    28 Jul 2005
with Susan McDougall
71. Conyza canadensis (L.) Cronquist
Database ID
2490339 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by David Biek, 1 2005. Sources: Flora of PNW.  
Type Notes
 
Collector
David Biek 
Collection #
05-200 
Other Collectors
Susan McDougall 
Date Collected
28 Jul 2005 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Yakima 
Locality
Southeast side of Mount Adams. Department of Natural Resources Quarry. 
Elevation
1242 m. 
Coordinates
46° 7.819' N, 121° 20.257' W 
Site Description
 
Specimen Notes
 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Asteraceae
72. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Lewis County:
On west bank of Cowlitz River adjacent to Mountain View Drive, ca 6 air km northeast of Packwood.
Elev. 350 m. 46.648464° N, 121.62848° W. Datum: WGS 84. Coordinate uncertainty: 50 meters. Georeferenced by Ben Legler. Coordinate Source: Digital Map.
Large, open gravel and sand bars along river, backed by colonizing thickets of Populus and Salix, with patches of Cytisus scoparius. Flowers cream-colored; plants common. Phenology: Flowers and Fruits.
WTU 407725; Barcode: WTU-V-021902
Ben Legler 13292    22 Sep 2014
72. Conyza canadensis (L.) Cronquist
Database ID
2782088 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
407725 
Barcode
WTU-V-021902 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Ben Legler, 2015. Sources: FNA.  
Type Notes
 
Collector
Ben Legler 
Collection #
13292 
Other Collectors
 
Date Collected
22 Sep 2014 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Lewis 
Locality
On west bank of Cowlitz River adjacent to Mountain View Drive, ca 6 air km northeast of Packwood. 
Elevation
350 m. 
Coordinates
46.648464° N, 121.62848° W 
Site Description
Large, open gravel and sand bars along river, backed by colonizing thickets of Populus and Salix, with patches of Cytisus scoparius. 
Specimen Notes
Flowers cream-colored; plants common. 
Phenology
Flowers and Fruits 
Origin
 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
73. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Grant County:
Shoulder of D 7 Road ca 2.7 road km south or junction with Road 20 NE, southeast of Soap Lake.
Elev. 362 m. 47.363153° N, 119.390359° W. Datum: WGS 84. Coordinate uncertainty: 4 meters. Georeferenced by Ben Legler. Coordinate Source: GPS.
Dry gravel road shoulder adjacent to alfalfa field. Flowers cream-colored; plants uncommon among alfalfa. Phenology: Flowers.
WTU
Ben Legler 13991    26 Oct 2015
73. Conyza canadensis (L.) Cronquist
Database ID
2782739 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Ben Legler, 2015.  
Type Notes
 
Collector
Ben Legler 
Collection #
13991 
Other Collectors
 
Date Collected
26 Oct 2015 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Shoulder of D 7 Road ca 2.7 road km south or junction with Road 20 NE, southeast of Soap Lake. 
Elevation
362 m. 
Coordinates
47.363153° N, 119.390359° W 
Site Description
Dry gravel road shoulder adjacent to alfalfa field. 
Specimen Notes
Flowers cream-colored; plants uncommon among alfalfa. 
Phenology
Flowers 
Origin
 
Cultivated?
No 
Imaged?
No 

Asteraceae
74. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Douglas County:
Columbia River, Rock Island ponds.
T22N R21E S23. Coordinate uncertainty: 1200 meters. Georeferenced by Joseph Stormer.
Riparian area around the pond. Occasional Siberian elm, cottonwood, reed canarygrass, Juncus sp. On an old roadbed between ponds. Phenology: Fruits. Origin: Native.
WTU 405045; Barcode: WTU-V-013432
P. Camp 3542    16 Sep 2015
74. Conyza canadensis (L.) Cronquist
Database ID
2787340 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
405045 
Barcode
WTU-V-013432 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
P. Camp 
Collection #
3542 
Other Collectors
 
Date Collected
16 Sep 2015 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Douglas 
Locality
Columbia River, Rock Island ponds. 
Elevation
 
Coordinates
T22N R21E S23 
Site Description
Riparian area around the pond. Occasional Siberian elm, cottonwood, reed canarygrass, Juncus sp. On an old roadbed between ponds. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
75. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Garfield County:
Along Highway 12 at Alpowa Summit.
Elev. 2785 ft. 46.43604° N, 117.42607° W. Coordinate Source: Specimen Label.
Along highway at summit with Lactuca serriola. Contains milky latex. In flower and fruit. Phenology: Flowers and Fruits. Origin: Native.
WTU 409859; Barcode: WTU-V-023902
Jeff Walker 874    8 Aug 2016
75. Conyza canadensis (L.) Cronquist
Database ID
2849394 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
409859 
Barcode
WTU-V-023902 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Jeff Walker 
Collection #
874 
Other Collectors
 
Date Collected
8 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Garfield 
Locality
Along Highway 12 at Alpowa Summit. 
Elevation
2785 ft. 
Coordinates
46.43604° N, 117.42607° W 
Site Description
Along highway at summit with Lactuca serriola. 
Specimen Notes
Contains milky latex. In flower and fruit. 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
76. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Jefferson County:
Port Townsend along edge of road at cul de sac at terminas of 111 Vista Boulevard.
Elev. 141 ft. 48° 5' 53.5" N, 122° 47' 36.2" W. Coordinate Source: Specimen Label.
With Hypochaeris radicata, Agrostis sp., Taraxacum officinale. Origin: Native.
WTU
Fred Weinmann 423    15 Sep 2017
76. Conyza canadensis (L.) Cronquist
Database ID
3145927 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Fred Weinmann 
Collection #
423 
Other Collectors
 
Date Collected
15 Sep 2017 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Jefferson 
Locality
Port Townsend along edge of road at cul de sac at terminas of 111 Vista Boulevard. 
Elevation
141 ft. 
Coordinates
48° 5' 53.5" N, 122° 47' 36.2" W 
Site Description
With Hypochaeris radicata, Agrostis sp., Taraxacum officinale. 
Specimen Notes
 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
77. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Asotin County:
On the side of Silcott Grade Road, south of Highway 12.
Elev. 875 ft. 46.40902° N, 117.19941° W. Coordinate Source: Specimen Label.
With Lactuca serriola. Phenology: Fertile. Origin: Native.
WTU 414102; Barcode: WTU-V-029883
Jeff Walker 886    4 Sep 2016
77. Conyza canadensis (L.) Cronquist
Database ID
3151204 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
414102 
Barcode
WTU-V-029883 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Jeff Walker 
Collection #
886 
Other Collectors
 
Date Collected
4 Sep 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Asotin 
Locality
On the side of Silcott Grade Road, south of Highway 12.  
Elevation
875 ft. 
Coordinates
46.40902° N, 117.19941° W 
Site Description
With Lactuca serriola.  
Specimen Notes
 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
78. Conyza canadensis (L.) Cronquist var. canadensis
     (= Conyza canadensis (L.) Cronquist)
U.S.A., Washington, Ferry County:
Western Colville National Forest and Vicinity: Davis Lake, circa 11 air miles northwest of Kettle Falls.
Elev. 4500 ft. T37N R36E S3 NW1/4. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by Sara Shiina. Coordinate Source: Digital Map.
Floating mat and immersed water plants. Phenology: Flowers and Fruits. Origin: Native.
WTU 413071; Barcode: WTU-V-028743
Jean Wood 7653    13 Aug 1996
with K. Ahlenslager, L. Swartz and J. Nisbet
78. Conyza canadensis (L.) Cronquist var. canadensis
Database ID
3151628 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
413071 
Barcode
WTU-V-028743 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist var. canadensis  
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist var. canadensis.  
Type Notes
 
Collector
Jean Wood 
Collection #
7653 
Other Collectors
K. Ahlenslager, L. Swartz and J. Nisbet 
Date Collected
13 Aug 1996 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Ferry 
Locality
Western Colville National Forest and Vicinity: Davis Lake, circa 11 air miles northwest of Kettle Falls.  
Elevation
4500 ft. 
Coordinates
T37N R36E S3 NW1/4 
Site Description
Floating mat and immersed water plants. 
Specimen Notes
 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
79. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Pend Oreille County:
Colville National Forest, Centerline Wetland Mitigation Ponds, about 12.5 miles east of Chewelah. Take Flowery Trail Road #2902 east of Chewelah about 11 miles to the ponds on the north side of the road.
Elev. 2900 ft. T32N R42E S11 SE1/4 SW1/4. Datum: WGS 84. Coordinate uncertainty: 300 meters. Georeferenced by Joseph Stormer. Coordinate Source: Digital Map.
Plants are growing with Agrostis exarata, Juncus bufonius, Platago [sic:Plantago] major, Mimulus floribundus and Carex atherodes. Phenology: Flowers and Fruits. Origin: Native.
WTU 413069; Barcode: WTU-V-028746
Kathy Ahlenslager 548    24 Aug 2000
79. Conyza canadensis (L.) Cronquist
Database ID
3154978 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
413069 
Barcode
WTU-V-028746 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Kathy Ahlenslager 
Collection #
548 
Other Collectors
 
Date Collected
24 Aug 2000 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pend Oreille 
Locality
Colville National Forest, Centerline Wetland Mitigation Ponds, about 12.5 miles east of Chewelah. Take Flowery Trail Road #2902 east of Chewelah about 11 miles to the ponds on the north side of the road. 
Elevation
2900 ft. 
Coordinates
T32N R42E S11 SE1/4 SW1/4 
Site Description
Plants are growing with Agrostis exarata, Juncus bufonius, Platago [sic:Plantago] major, Mimulus floribundus and Carex atherodes. 
Specimen Notes
 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
80. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Stevens County:
Colville National Forest, Federal Highway Administration Mitigation Ponds about 14 miles southeast of Chewelah. Take County road #2850 southeast of Chewelah about 10 miles, then turn north on County road #2857 for 2 miles. Turn east on Forest Service road #4342 for 2 miles to the ponds.
Elev. 3100 ft. T32N R42E S31 NE1/4 NE1/4. Datum: WGS 84. Coordinate uncertainty: 9351 meters. Georeferenced by Crystal Shin. Coordinate Source: GeoLocate.
Growing with Sagina occidentalis, Agrostis exarata, Bromus inermis, Epilobium paniculatum, Filago arvensis and Polygonum ramosissimum. Phenology: Flowers and Fruits. Origin: Native.
WTU 413070; Barcode: WTU-V-028725
Kathy Ahlenslager 530    15 Sep 2000
80. Conyza canadensis (L.) Cronquist
Database ID
3154979 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
413070 
Barcode
WTU-V-028725 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Kathy Ahlenslager 
Collection #
530 
Other Collectors
 
Date Collected
15 Sep 2000 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Stevens 
Locality
Colville National Forest, Federal Highway Administration Mitigation Ponds about 14 miles southeast of Chewelah. Take County road #2850 southeast of Chewelah about 10 miles, then turn north on County road #2857 for 2 miles. Turn east on Forest Service road #4342 for 2 miles to the ponds. 
Elevation
3100 ft. 
Coordinates
T32N R42E S31 NE1/4 NE1/4 
Site Description
Growing with Sagina occidentalis, Agrostis exarata, Bromus inermis, Epilobium paniculatum, Filago arvensis and Polygonum ramosissimum. 
Specimen Notes
 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
81. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Columbia County:
Along Highland Road near the intersection with Patit Road.
Elev. 3075 ft. 46.34949° N, 117.71995° W. Coordinate Source: Specimen Label.
Phenology: Flowers and Fruits. Origin: Native.
WTU 418482; Barcode: WTU-V-039140
Jeff Walker 1096    2 Sep 2018
81. Conyza canadensis (L.) Cronquist
Database ID
3234731 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
418482 
Barcode
WTU-V-039140 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Jeff Walker 
Collection #
1096 
Other Collectors
 
Date Collected
2 Sep 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Columbia 
Locality
Along Highland Road near the intersection with Patit Road. 
Elevation
3075 ft. 
Coordinates
46.34949° N, 117.71995° W 
Site Description
 
Specimen Notes
 
Phenology
Flowers and Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
82. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Morrow County:
Government bunkhouse above shoreline of Lake Umatilla, 2.8 air kilometers east-northeast of east end of Big Blalock Island, Umatilla National Wildlife Refuge.
Elev. 85 m. 45.92033° N, 119.574856° W. Datum: WGS 84. Coordinate Source: Specimen Label.
Common, dry sunny ground, weedy yard, over basalt; with Bromus tectorum, Bassia scoparia, Lactuca serriola. Robust annuals. Phenology: Fruits. Origin: Native.
WTU 419134; Barcode: WTU-V-041603
Peter W. Dunwiddie PWD 18-497    14 Aug 2018
with Peter F. Zika
82. Conyza canadensis (L.) Cronquist
Database ID
3238562 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
419134 
Barcode
WTU-V-041603 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Peter W. Dunwiddie 
Collection #
PWD 18-497 
Other Collectors
Peter F. Zika 
Date Collected
14 Aug 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Morrow 
Locality
Government bunkhouse above shoreline of Lake Umatilla, 2.8 air kilometers east-northeast of east end of Big Blalock Island, Umatilla National Wildlife Refuge.  
Elevation
85 m. 
Coordinates
45.92033° N, 119.574856° W 
Site Description
Common, dry sunny ground, weedy yard, over basalt; with Bromus tectorum, Bassia scoparia, Lactuca serriola.  
Specimen Notes
Robust annuals.  
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
83. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Pierce County:
JBLM, TA-2, McKay Marsh.
Elev. 80 m. 47.10027° N, 122.61534° W. Datum: WGS 84. Coordinate Source: GPS.
Locally common on edge of road, with Hypericum perforatum, Senecio jacobaea. Origin: Native.
WTU
Peter Dunwiddie PWD-16-420    27 Jul 2016
with Sarah Krock, Peter Zika, Amber Martens
83. Conyza canadensis (L.) Cronquist
Database ID
3245253 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Peter Dunwiddie.  
Type Notes
 
Collector
Peter Dunwiddie 
Collection #
PWD-16-420 
Other Collectors
Sarah Krock, Peter Zika, Amber Martens 
Date Collected
27 Jul 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pierce 
Locality
JBLM, TA-2, McKay Marsh. 
Elevation
80 m. 
Coordinates
47.10027° N, 122.61534° W 
Site Description
Locally common on edge of road, with Hypericum perforatum, Senecio jacobaea. 
Specimen Notes
 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Asteraceae
84. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Morrow County:
Umatilla National Wildlife Refuge.
45.92033° N, 119.574856° W. Datum: WGS 84. Georeferenced by Crystal Shin. Coordinate Source: GPS.
Weedy yard of bunkhouse, with Bromus tectorum, Bassia scoparia, Lactuca serriola.
WTU
Peter Dunwiddie PWD-18-497    14 Aug 2018
with Peter Zika
84. Conyza canadensis (L.) Cronquist
Database ID
3279889 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Peter Dunwiddie, 2019. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
Peter Dunwiddie 
Collection #
PWD-18-497 
Other Collectors
Peter Zika 
Date Collected
14 Aug 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Morrow 
Locality
Umatilla National Wildlife Refuge. 
Elevation
 
Coordinates
45.92033° N, 119.574856° W 
Site Description
Weedy yard of bunkhouse, with Bromus tectorum, Bassia scoparia, Lactuca serriola. 
Specimen Notes
 
Phenology
 
Origin
 
Cultivated?
No 
Imaged?
No 

Asteraceae
85. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Sherman County:
LePage Campground on I-84.
45.728362° N, 120.65148° W. Datum: WGS 84. Coordinate Source: GPS.
Common on dry north-facing slope, full sun, with Bromus tectorum. Taprooted. Phenology: Flowers and Fruits. Origin: Introduced.
WTU
Peter F. Zika PWD-19-399    1 Aug 2019
with Peter Dunwiddie
85. Conyza canadensis (L.) Cronquist
Database ID
3282105 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.
    Annotated by Peter F. Zika, 2019. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
PWD-19-399 
Other Collectors
Peter Dunwiddie 
Date Collected
1 Aug 2019 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Sherman 
Locality
LePage Campground on I-84. 
Elevation
 
Coordinates
45.728362° N, 120.65148° W 
Site Description
Common on dry north-facing slope, full sun, with Bromus tectorum. 
Specimen Notes
Taprooted. 
Phenology
Flowers and Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Asteraceae
86. Conyza canadensis (L.) Cronquist
U.S.A., Oregon, Wasco County:
Along Upper Deschutes River Access Road, at Wapinitia Recreation Site.
45.144251°, -121.125455°. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by Dan Post. Coordinate Source: Digital Map.
Weedy margin of parking area. Phenology: Flowers. Origin: Native.
WTU 422496; Barcode: WTU-V-056543
David Gross 1491    22 Aug 2018
86. Conyza canadensis (L.) Cronquist
Database ID
3284550 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
422496 
Barcode
WTU-V-056543 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
David Gross 
Collection #
1491 
Other Collectors
 
Date Collected
22 Aug 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Wasco 
Locality
Along Upper Deschutes River Access Road, at Wapinitia Recreation Site. 
Elevation
 
Coordinates
45.144251°, -121.125455° 
Site Description
Weedy margin of parking area. 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Asteraceae
87. Conyza canadensis (L.) Cronquist
U.S.A., Washington, Kittitas County:
Between West Sparks Road and i-90, Easton, Washington.
47.246881° N, 121.185275° W.
Vacant lot. Phenology: Fruits. Origin: Native.
WTU 425124; Barcode: WTU-V-068695
Bill Harms 8449    1 Aug 2014
87. Conyza canadensis (L.) Cronquist
Database ID
3500464 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
425124 
Barcode
WTU-V-068695 
Other Numbers
 
Family
Asteraceae 
Name on Specimen
Conyza canadensis (L.) Cronquist 
Accepted Name
Conyza canadensis (L.) Cronquist 
Annotation History
1. Conyza canadensis (L.) Cronquist.  
Type Notes
 
Collector
Bill Harms 
Collection #
8449 
Other Collectors
 
Date Collected
1 Aug 2014 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Kittitas 
Locality
Between West Sparks Road and i-90, Easton, Washington. 
Elevation
 
Coordinates
47.246881° N, 121.185275° W 
Site Description
Vacant lot. 
Specimen Notes
 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

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Database Field Descriptions:
Database ID
Each of our backend databases assigns a unique and persistent integer ID to each specimen record. A GUID (globally unique identifier) can be formed from this by combining it with the herbarium and collection acronyms (example: WTU-VP-12733).
Herbarium
Every herbarium is referred to by a unique acronym. Ours is WTU, which stands for Washington Territorial University. Our database also includes some specimens housed at NOCA (North Cascades National Park Herbarium) and MORA (Mount Rainier National Park Herbarium). For a complete listing of herbarium acronyms, see Index Herbariorum.
Collection
WTU's specimens are physically housed in separate collections according to taxonomic groups: Vascular Plants, Bryophytes, Algae, Lichens, and Fungi.
Dataset
Some specimens are grouped into "Datasets," representing such things as incorporated herbaria or major collecting projects.
Accession
Each of WTU's Vascular Plant specimens is assigned an accession number. Our other collections lack accession numbers (see Barcode instead). Ideally, each specimen would have a unique accession number, but this fails in practice. Some accession numbers include "JWT" after the number; these indicate specimens originating from the herbarium of J. William Thompson that were integrated into WTU's collections but not re-accessioned with WTU numbers. Accession numbers followed by an "A", "B", or other single letter represent sheets with multiple collections mounted on them, all using the same accession number.
Barcode
Our Bryophyte, Algae, Lichen, Fungi, and some Vascular Plant specimens are assigned pre-printed barcode stickers. These follow the format "WTU-C-######", where C represents a code for the collection (one of: V, B, A, L, F) and ###### represents a zero-padded, six-digit number.
Other Numbers
Specimens collected from North Cascades and Mount Rainier National Parks are assigned National Park Service accession and catalog numbers. These numbers are listed here.
Family
The scientific name of the family. Our database generally uses AGPIII and other current sources for vascular plant family names. However, our physical Vascular Plant collection is organized by the older Englerian sequence.
Accepted Name
For Vascular Plants, this gives the accepted name by which the specimen is currently known. The accepted name is derived by looking up the most recent annotation name in a synonymy table and finding its corresponding accepted name.
Annotation History
The sequence of annotations and scientific names given on the physical specimen is listed here, in order from the first to most recent. We treat the name on the original label as the first annotation.
Type Notes
If this is a type specimen, then information about its type status (holotype, isotype, etc.) and the name(s) for which it is a type is provided here.
Collector
The person who collected this specimen, as given on the label, and whose name is associated with the collection number on the label. If no collector name is given, we enter "unknown" into this field.
Collection #
A unique number assigned to the specimen by the collector. Different collectors use different numbering schemes; these may include the addition of prefixes (such as their initials or the year) or suffixes (such as an A or B). In the database, any prefixes and suffixes are included in the Collector's Number field exactly as they appear on the specimen label. When no collector number is given, we type "s.n." in this field.
Other Collectors
Other collectors that are listed on the label along with the primary collector, but whose collection number was not assigned to this specimen.
Date Collected
The date on which the specimen was collected, split up between day, month, and year in the database. Months are stored as nubmers (1-12) but displayed as three-letter abbreviations. Years are alway 4-digits long. Occasionally the label may give a range of dates. In such cases, the first date in the range is used as the collection date, and the entire collection date is entered into the Verbatim Date field as it appears on the label. If no date is given, then the date fields are left blank and a note is made in the Verbatim Date field.
Verbatim Date
The literal date string as displayed on the label; only used for dates that cannot be represented by a single day, month, and year.
Country
Name of the country from which the specimen was collected. Specimens from the United States of America are entered as "U.S.A."
State or Province
Name of the state or province from which the specimen was collected, if given on the label. U.S. states are spelled out in full.
County
Name of the county, municipality, borough, parish, or equivalent political unit from which the specimen was collected, if given on the label. The designation (such as "county") is not included in the field value.
Locality
A text description of the location where the specimen was collected, as given on the specimen label. May include national park, national forest, and other land use designations. Older collections often have short and imprecise locality data. Detailed locality data for rare species (threatened, endangered, sensitive, watch, ...) is included in our database but omitted from the search results.
Elevation
Elevations may be given either in feet or meters, and may include a minimum and maximum elevation, representing a range.
Coordinates
May include TRS/PLSS (township, range, section, quarter, etc.), latitude/longitude, and UTM. Coordinates for arare species are included in our database but omittedfrom the search results.
Site Description
This field includes all label information characterizing the site, such habitat, vegetation zone/association, substrate, slope, moisture, associated species, and so on - as the information appears on the specimen label.
Specimen Notes
Includes any characteristics pertaining to the plant specimen itself, such as flower color, fruit length, and plant height, along with information about the species, such as abundance and the precise location and micro-habitat where collected. Also includes any notes or text on the specimen that does not better fit into another field.
Phenology
Specifies the sexual maturity/condition of the specimen, such as flowering, fruiting, cone-bearing, spore-bearing, fertile, or sterile. Phenology is generally not given on the label; instead the person entering the record examines the specimen and selects the appropriate value.
Origin
Specifies whether the specimen is native or introduced to the state or country where it was collected. Origin data is rarely found on the specimen label; instead, it is entered during data entry either from a lookup table or from the date entry personnel's own knowledge. Origin data should be considered supplemental information, and should not be relied on as authoritative.
Cultivated
A Yes/No flag indicating if this is a cultivated specimen. Cultivated specimens generally do not represent valid distribution records and should be excluded from range maps or other geographic analyses.


Disclaimer:

WTU makes a reasonable effort to prevent and correct data entry errors; however, we cannot guarantee that our database is free from typos, misidentifications, or inaccurate label data. Please use the information at your own discretion. Error corrections and comments can be sent to Ben Legler or David Giblin.