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Field Descriptions
36 matching records found.
Label Query: Genus = "Lemna", Species = "trisulca"
Araceae
1. Lemna trisulca L.
U.S.A., Washington, Chelan County:
Small lake on Chumstick Mtn.
Elev. 3000 ft. T25N R19E S20. Datum: WGS84. Coordinate uncertainty: 500 meters. Georeferenced by WTU Staff. Coordinate Source: Georeferenced.
With Typha latifolia. Gramineae and Equisetum arvense on shore. Floating near shore. Some Carex on log nearby. Origin: Native.
WTU 321215
Elroy Burnett 359a    17 Jun 1991
with Mildred Arnot
1. Lemna trisulca L.
Database ID
3605 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
321215 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Elroy Burnett 
Collection #
359a 
Other Collectors
Mildred Arnot 
Date Collected
17 Jun 1991 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Chelan 
Locality
Small lake on Chumstick Mtn. 
Elevation
3000 ft. 
Coordinates
T25N R19E S20 
Site Description
With Typha latifolia. Gramineae and Equisetum arvense on shore. 
Specimen Notes
Floating near shore. Some Carex on log nearby. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
2. Lemna trisulca L.
U.S.A., Washington, Grant County:
Falls Lake, Dry Falls State Park.
47.60472°, -119.34639°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
In lake. Origin: Native.
WTU 175671
Xerpha M. Gaines 704    5 Jun 1952
with T. H. Scheffer
2. Lemna trisulca L.
Database ID
3606 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
175671 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
Xerpha M. Gaines 
Collection #
704 
Other Collectors
T. H. Scheffer 
Date Collected
5 Jun 1952 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Falls Lake, Dry Falls State Park. 
Elevation
 
Coordinates
47.60472°, -119.34639° 
Site Description
 
Specimen Notes
In lake. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
3. Lemna trisulca L.
U.S.A., Washington, Island County:
Coupeville, Whidbey Island.
48.219821°, -122.68628°. Datum: WGS 84. Coordinate uncertainty: 3000 meters. Georeferenced by Joseph Stormer. Coordinate Source: GeoLocate.
On water. Origin: Native.
WTU 4520
N. L. Gardner s.n.    30 Jul 1898
3. Lemna trisulca L.
Database ID
3607 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
4520 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
N. L. Gardner 
Collection #
s.n. 
Other Collectors
 
Date Collected
30 Jul 1898 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Island 
Locality
Coupeville, Whidbey Island. 
Elevation
 
Coordinates
48.219821°, -122.68628° 
Site Description
 
Specimen Notes
On water. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
4. Lemna trisulca L.
U.S.A., Washington, King County:
Seattle.
47.613617°, -122.310098°. Datum: WGS 84. Coordinate uncertainty: 15750 meters. Georeferenced by Joseph Stormer. Coordinate Source: Digital Map.
Wet places. Origin: Native.
WTU 4536
F. Bouton s.n.    30 Oct 1911
4. Lemna trisulca L.
Database ID
3608 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
4536 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
F. Bouton 
Collection #
s.n. 
Other Collectors
 
Date Collected
30 Oct 1911 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Seattle. 
Elevation
 
Coordinates
47.613617°, -122.310098° 
Site Description
 
Specimen Notes
Wet places. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
5. Lemna trisulca L.
U.S.A., Washington, Lincoln County:
Cow Creek, 3 miles east of Sprague.
47.300262°, -117.910404°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
In creek. Origin: Native.
WTU 121199
C. F. Yocom s.n.    29 Jul 1947
5. Lemna trisulca L.
Database ID
3609 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
121199 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
C. F. Yocom 
Collection #
s.n. 
Other Collectors
 
Date Collected
29 Jul 1947 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Lincoln 
Locality
Cow Creek, 3 miles east of Sprague. 
Elevation
 
Coordinates
47.300262°, -117.910404° 
Site Description
 
Specimen Notes
In creek. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
6. Lemna trisulca L.
U.S.A., Washington, Thurston County:
20 miles SW of Tacoma near Clear Lake (McIntosh Lake).
46.82389°, -122.47222°. Datum: WGS 84. Coordinate uncertainty: 5000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Free floating in shallow pond. Origin: Native.
WTU 256717
Allen D. Fechtig s.n.    24 Sep 1967
with Henry Carsner
6. Lemna trisulca L.
Database ID
3610 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
256717 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
Allen D. Fechtig 
Collection #
s.n. 
Other Collectors
Henry Carsner 
Date Collected
24 Sep 1967 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Thurston 
Locality
20 miles SW of Tacoma near Clear Lake (McIntosh Lake). 
Elevation
 
Coordinates
46.82389°, -122.47222° 
Site Description
 
Specimen Notes
Free floating in shallow pond. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
7. Lemna trisulca L.
U.S.A., Washington, Spokane County:
Meadow Lake.
47.7675°, -117.35389°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Origin: Native.
WTU 34804
T. Kincaid s.n.    29 Aug 1935
7. Lemna trisulca L.
Database ID
3611 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
34804 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
T. Kincaid 
Collection #
s.n. 
Other Collectors
 
Date Collected
29 Aug 1935 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Spokane 
Locality
Meadow Lake. 
Elevation
 
Coordinates
47.7675°, -117.35389° 
Site Description
 
Specimen Notes
 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
8. Lemna trisulca L.
U.S.A., Washington, San Juan County:
San Juan Island, unnamed pond on west side of Mount Dallas, West Side Road.
Elev. 260 ft. T35N R4W S13 SW. Datum: WGS 84. Coordinate uncertainty: 400 meters. Georeferenced by WTU Staff. Coordinate Source: Georeferenced.
With Polygonum amphibium, Potamogeton natans, Lemna minor. Aquatic, on north shore of pond. Origin: Native.
WTU 340016
P. F. Zika 14071    14 Aug 1999
8. Lemna trisulca L.
Database ID
3612 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
340016 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14071 
Other Collectors
 
Date Collected
14 Aug 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
San Juan Island, unnamed pond on west side of Mount Dallas, West Side Road. 
Elevation
260 ft. 
Coordinates
T35N R4W S13 SW 
Site Description
With Polygonum amphibium, Potamogeton natans, Lemna minor. 
Specimen Notes
Aquatic, on north shore of pond. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
9. Lemna trisulca L.
Russian Federation, Sakhalin Region
Sakhalin Island, central part; 10.5 kilometers southwest of Nogliki on east side of lower Tym River circa 1 kilometer upstream of mouth of Parkata River.
Elev. 66 ft. 51° 38' 59.64" N, 142° 58' 37.98" E.
Shallow lakes and ponds along river, surrounded by extensive marshes and Alnus/Salix thickets. In shallow water on lake edge. Origin: Native.
WTU 357299
Ben Legler 1082    3 Aug 2003
9. Lemna trisulca L.
Database ID
28116 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
357299 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by Slava Barkalov, 2003.  
Type Notes
 
Collector
Ben Legler 
Collection #
1082 
Other Collectors
 
Date Collected
3 Aug 2003 
Verbatim Date
 
Country
Russian Federation 
State or Province
Sakhalin Region 
County
 
Locality
Sakhalin Island, central part; 10.5 kilometers southwest of Nogliki on east side of lower Tym River circa 1 kilometer upstream of mouth of Parkata River. 
Elevation
66 ft. 
Coordinates
51° 38' 59.64" N, 142° 58' 37.98" E 
Site Description
Shallow lakes and ponds along river, surrounded by extensive marshes and Alnus/Salix thickets. 
Specimen Notes
In shallow water on lake edge. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
10. Lemna trisulca L.
U.S.A., Washington, San Juan County:
In Trout Lake.
48.532778°, -123.126389°. Datum: WGS 84. Coordinate uncertainty: 800 meters. Georeferenced by WTU Staff. Coordinate Source: Georeferenced.
Phenology: Fertile. Origin: Native.
WTU 24810JWT
Morton E. Peck 13066    22 Jul 1923
10. Lemna trisulca L.
Database ID
48785 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
24810JWT 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
Morton E. Peck 
Collection #
13066 
Other Collectors
 
Date Collected
22 Jul 1923 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
In Trout Lake. 
Elevation
 
Coordinates
48.532778°, -123.126389° 
Site Description
 
Specimen Notes
 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
11. Lemna trisulca L.
U.S.A., Washington, Grant County:
Dry Falls Coulee.
47.60472°, -119.34639°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Fertile. Origin: Native.
WTU 100638
T. H. Scheffer s.n.    22 Aug 1945
11. Lemna trisulca L.
Database ID
48787 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
100638 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
T. H. Scheffer 
Collection #
s.n. 
Other Collectors
 
Date Collected
22 Aug 1945 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Dry Falls Coulee. 
Elevation
 
Coordinates
47.60472°, -119.34639° 
Site Description
 
Specimen Notes
 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
12. Lemna trisulca L.
U.S.A., Washington, Spokane County:
Spangle.
47.4275°, -117.37917°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Phenology: Fertile. Origin: Native.
WTU 269323
Wilhelm N. Suksdorf 1332    30 Jun 1884
12. Lemna trisulca L.
Database ID
48788 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
269323 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
Wilhelm N. Suksdorf 
Collection #
1332 
Other Collectors
 
Date Collected
30 Jun 1884 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Spokane 
Locality
Spangle. 
Elevation
 
Coordinates
47.4275°, -117.37917° 
Site Description
 
Specimen Notes
 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
13. Lemna trisulca L.
U.S.A., Washington, San Juan County:
Puget Sound; San Juan Island; Duck Soup Inn; east side of Roche Harbor Road.
T36N R3W S28 SW 1/4 of SW 1/4. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
West shore of small unnamed pond; shallow marsh. Uncommon. Phenology: Fertile. Origin: Native.
WTU 340140
P. F. Zika 14116    22 Aug 1999
13. Lemna trisulca L.
Database ID
48793 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
340140 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14116 
Other Collectors
 
Date Collected
22 Aug 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
Puget Sound; San Juan Island; Duck Soup Inn; east side of Roche Harbor Road. 
Elevation
 
Coordinates
T36N R3W S28 SW 1/4 of SW 1/4 
Site Description
West shore of small unnamed pond; shallow marsh. 
Specimen Notes
Uncommon. 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
14. Lemna trisulca L.
U.S.A., Montana, Lake County:
Large "pot hole" 0.2 miles southeast of Nine-Pipes Reservoir.
Plants submerged. Phenology: Fertile. Origin: Native.
WTU 222878
C. L. Hitchcock 23982    11 Jul 1965
14. Lemna trisulca L.
Database ID
48795 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
222878 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
C. L. Hitchcock 
Collection #
23982 
Other Collectors
 
Date Collected
11 Jul 1965 
Verbatim Date
 
Country
U.S.A. 
State or Province
Montana 
County
Lake 
Locality
Large "pot hole" 0.2 miles southeast of Nine-Pipes Reservoir. 
Elevation
 
Coordinates
 
Site Description
 
Specimen Notes
Plants submerged. 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
15. Lemna trisulca L.
Canada, Yukon Territory
Mile 941 Alaska Highway northwest of Whitehorse.
Elev. 2100 ft. 60° 51' N, 135° 36' W.
Margin of mucky pond. Common. Phenology: Fertile.
WTU 204051
J. A. Calder 28108    11 Aug 1960
with I. Kukkonen
15. Lemna trisulca L.
Database ID
48798 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
204051 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
J. A. Calder 
Collection #
28108 
Other Collectors
I. Kukkonen 
Date Collected
11 Aug 1960 
Verbatim Date
 
Country
Canada 
State or Province
Yukon Territory 
County
 
Locality
Mile 941 Alaska Highway northwest of Whitehorse. 
Elevation
2100 ft. 
Coordinates
60° 51' N, 135° 36' W 
Site Description
Margin of mucky pond. 
Specimen Notes
Common. 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
16. Lemna trisulca L.
Canada, Yukon Territory
Canol Road; Mile 200; Ross River Valley; lake west of Lake Lewis.
Phenology: Fertile.
WTU 127768
A. E. Porsild 11527    8 Aug 1944
with A. J. Breitung
16. Lemna trisulca L.
Database ID
48803 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
127768 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
A. E. Porsild 
Collection #
11527 
Other Collectors
A. J. Breitung 
Date Collected
8 Aug 1944 
Verbatim Date
 
Country
Canada 
State or Province
Yukon Territory 
County
 
Locality
Canol Road; Mile 200; Ross River Valley; lake west of Lake Lewis. 
Elevation
 
Coordinates
 
Site Description
 
Specimen Notes
 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
17. Lemna trisulca L.
Canada, Yukon Territory
Vicinity of Mackintosh (Mile 1022, Alaska Highway); Sulphur Lake (Mile 1038).
Alkaline pond near lake. Phenology: Fertile.
WTU 226356
W. B. Schofield 8026    28 Jul 1957
with A. E. Porsild, H. A. Crum
17. Lemna trisulca L.
Database ID
48806 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
226356 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
W. B. Schofield 
Collection #
8026 
Other Collectors
A. E. Porsild, H. A. Crum 
Date Collected
28 Jul 1957 
Verbatim Date
 
Country
Canada 
State or Province
Yukon Territory 
County
 
Locality
Vicinity of Mackintosh (Mile 1022, Alaska Highway); Sulphur Lake (Mile 1038). 
Elevation
 
Coordinates
 
Site Description
Alkaline pond near lake. 
Specimen Notes
 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
18. Lemna trisulca L.
Canada, British Columbia
18 miles west of Redstone on road to Chilanko Forks; near Puntzi Lake.
Elev. 3000 ft.
In embayment of stream. . Occasional. Phenology: Fertile.
WTU 186874A
J. A. Calder 18346    4 Jul 1956
with J. A. Parmelee, R. L. Taylor
18. Lemna trisulca L.
Database ID
48810 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
186874A 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.  
Type Notes
 
Collector
J. A. Calder 
Collection #
18346 
Other Collectors
J. A. Parmelee, R. L. Taylor 
Date Collected
4 Jul 1956 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
18 miles west of Redstone on road to Chilanko Forks; near Puntzi Lake. 
Elevation
3000 ft. 
Coordinates
 
Site Description
In embayment of stream. . 
Specimen Notes
Occasional. 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
19. Lemna trisulca L.
Canada, British Columbia
Southwest end of Tabor Lake about 7 miles east of Prince George.
53.908025°, -122.560184°. Datum: WGS 84. Coordinate uncertainty: 1000 meters. Georeferenced by Debbie Fynn. Coordinate Source: Digital Map.
In shallow water at marshy margin of lake. Phenology: Fertile. Origin: Unknown.
WTU 172930
J. A. Calder 14387    12 Aug 1954
with J. M. Ferguson, D. B. O. Savile
19. Lemna trisulca L.
Database ID
48811 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
172930 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Remarks: #NAME?
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
J. A. Calder 
Collection #
14387 
Other Collectors
J. M. Ferguson, D. B. O. Savile 
Date Collected
12 Aug 1954 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
Southwest end of Tabor Lake about 7 miles east of Prince George. 
Elevation
 
Coordinates
53.908025°, -122.560184° 
Site Description
In shallow water at marshy margin of lake. 
Specimen Notes
 
Phenology
Fertile 
Origin
Unknown 
Cultivated?
No 
Imaged?
No 

Araceae
20. Lemna trisulca L.
Canada, British Columbia
Joyce Lake; about 5 miles northwest of Falkland.
Elev. 2700 ft.
Submerged among rushes. Phenology: Fertile.
WTU 67595
C. L. Hitchcock 7495    30 Jun 1941
with J. S. Martin
20. Lemna trisulca L.
Database ID
48826 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
67595 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
C. L. Hitchcock 
Collection #
7495 
Other Collectors
J. S. Martin 
Date Collected
30 Jun 1941 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
Joyce Lake; about 5 miles northwest of Falkland. 
Elevation
2700 ft. 
Coordinates
 
Site Description
 
Specimen Notes
Submerged among rushes. 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
21. Lemna trisulca L.
Canada, British Columbia
East end of Drywilliam Lake south of Fraser Lake; Burns Lake - Vanderhoof Road.
At margin of lake. Common. Phenology: Fertile.
WTU 173061
J. A. Calder 15368    3 Sep 1954
with D. B. O. Savile, J. M. Ferguson
21. Lemna trisulca L.
Database ID
48829 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
173061 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
J. A. Calder 
Collection #
15368 
Other Collectors
D. B. O. Savile, J. M. Ferguson 
Date Collected
3 Sep 1954 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
East end of Drywilliam Lake south of Fraser Lake; Burns Lake - Vanderhoof Road. 
Elevation
 
Coordinates
 
Site Description
At margin of lake. 
Specimen Notes
Common. 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
22. Lemna trisulca L.
Canada, British Columbia
Chezacut.
In mud; water 6 inches to 2.5 feet deep. Plants 2 - 5 inches high. Phenology: Fertile.
WTU 40430
T. T. McCabe 712    14 Sep 1933
22. Lemna trisulca L.
Database ID
48831 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
40430 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
T. T. McCabe 
Collection #
712 
Other Collectors
 
Date Collected
14 Sep 1933 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
Chezacut. 
Elevation
 
Coordinates
 
Site Description
In mud; water 6 inches to 2.5 feet deep. 
Specimen Notes
Plants 2 - 5 inches high. 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
23. Lemna trisulca L.
Canada, British Columbia
Guichon Creek, about 13 miles south of Savona.
Elev. 3500 ft. 50.595505°, -120.869804°. Datum: WGS 84. Coordinate uncertainty: 8000 meters. Georeferenced by Joseph Stormer. Coordinate Source: Digital Map.
In a small lake among grassy hills. Phenology: Fertile.
WTU 67600
C. L. Hitchcock 7439    26 Jun 1941
with J. S. Martin
23. Lemna trisulca L.
Database ID
49009 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
67600 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
C. L. Hitchcock 
Collection #
7439 
Other Collectors
J. S. Martin 
Date Collected
26 Jun 1941 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
Guichon Creek, about 13 miles south of Savona. 
Elevation
3500 ft. 
Coordinates
50.595505°, -120.869804° 
Site Description
In a small lake among grassy hills. 
Specimen Notes
 
Phenology
Fertile 
Origin
 
Cultivated?
No 
Imaged?
No 

Araceae
24. Lemna trisulca L.
U.S.A., Washington, King County:
Seattle.
47.613617°, -122.310098°. Datum: WGS 84. Coordinate uncertainty: 15750 meters. Georeferenced by Joseph Stormer. Coordinate Source: Digital Map.
Duckweed. Wet places. Common. Two specimens on the same sheet. L. turionifera and L. trisulca. Phenology: Fertile. Origin: Native.
WTU 4537B
F. Bouton s.n.    30 Oct 1911
24. Lemna trisulca L.
Database ID
49012 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
4537B 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna minor L.
    Annotated by T. C. Frye.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982.  
Type Notes
 
Collector
F. Bouton 
Collection #
s.n. 
Other Collectors
 
Date Collected
30 Oct 1911 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Seattle. 
Elevation
 
Coordinates
47.613617°, -122.310098° 
Site Description
 
Specimen Notes
Duckweed. Wet places. Common. Two specimens on the same sheet. L. turionifera and L. trisulca. 
Phenology
Fertile 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
25. Lemna trisulca L.
U.S.A., Montana, Madison County:
Floating on Ullrey Lake, Madison Range.
Phenology: Flowers. Origin: Native.
WTU 362783
C. L. Hitchcock 16777    24 Jul 1947
25. Lemna trisulca L.
Database ID
138092 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
362783 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
2. Lemna trisulca L.
    Annotated by E. Landolt, 1982. Remarks: 1040 60949/6 
Type Notes
 
Collector
C. L. Hitchcock 
Collection #
16777 
Other Collectors
 
Date Collected
24 Jul 1947 
Verbatim Date
 
Country
U.S.A. 
State or Province
Montana 
County
Madison 
Locality
Floating on Ullrey Lake, Madison Range. 
Elevation
 
Coordinates
 
Site Description
 
Specimen Notes
 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
26. Lemna trisulca L.
U.S.A., Washington, King County:
Seattle.
47.613617°, -122.310098°. Datum: WGS 84. Coordinate uncertainty: 15750 meters. Georeferenced by Joseph Stormer. Coordinate Source: Digital Map.
In water. Duckweed. Phenology: Vegetative. Origin: Native.
WTU 362784
B. N. Phillips s.n.    22 Oct 1910
26. Lemna trisulca L.
Database ID
142565 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
362784 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by T. C. Frye.  
Type Notes
 
Collector
B. N. Phillips 
Collection #
s.n. 
Other Collectors
 
Date Collected
22 Oct 1910 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Seattle. 
Elevation
 
Coordinates
47.613617°, -122.310098° 
Site Description
In water. 
Specimen Notes
Duckweed. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
27. Lemna trisulca L.
U.S.A., Washington, Kittitas County:
Wenatchee National Forest. Forest Service Road #9712 towards Lion Rock; 100 meters east from junction with Forest Service Road 9716, right-hand side of road heading east; approximately 7 kilometers from Highway 97.
Elev. 4980 ft. 47° 18.275' N, 120° 35.977' W. Datum: WGS 84. Coordinate uncertainty: 6 meters. Coordinate Source: GPS.
One hectare wetland with small (less than 25 square meters) pool of open water; dominated by Carex; generally bog-like conditions - mucky, quaking soils. Abundant in southern small pools forming thick mats below water surface. Phenology: Vegetative. Origin: Native.
WTU 375164
Jessica Ni 100    29 Aug 2006
27. Lemna trisulca L.
Database ID
157237 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
375164 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by David Giblin, 18 2007. Sources: FNA.  
Type Notes
 
Collector
Jessica Ni 
Collection #
100 
Other Collectors
 
Date Collected
29 Aug 2006 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Kittitas 
Locality
Wenatchee National Forest. Forest Service Road #9712 towards Lion Rock; 100 meters east from junction with Forest Service Road 9716, right-hand side of road heading east; approximately 7 kilometers from Highway 97. 
Elevation
4980 ft. 
Coordinates
47° 18.275' N, 120° 35.977' W 
Site Description
One hectare wetland with small (less than 25 square meters) pool of open water; dominated by Carex; generally bog-like conditions - mucky, quaking soils. 
Specimen Notes
Abundant in southern small pools forming thick mats below water surface. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
28. Lemna trisulca L.
U.S.A., Washington, Skagit County:
Campbell Lake. A naturally formed lake approximately 0.75 square miles in size.
Elev. 76 ft. 48° 26.204' N, 122° 37.902' W. Datum: WGS 84. Coordinate uncertainty: 5 meters.
Mucky lake margin dominated by Hippuris vulgaris, Polygonum sp., Typha latifolia, and Salix sp. Locally common at base of rock face rising from water. Phenology: Vegetative. Origin: Native.
WTU 377124
Ben Legler 3679    5 Oct 2006
with David Giblin
28. Lemna trisulca L.
Database ID
157453 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
377124 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by David Giblin, 25 2007. Sources: FNA.  
Type Notes
 
Collector
Ben Legler 
Collection #
3679 
Other Collectors
David Giblin 
Date Collected
5 Oct 2006 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Skagit 
Locality
Campbell Lake. A naturally formed lake approximately 0.75 square miles in size. 
Elevation
76 ft. 
Coordinates
48° 26.204' N, 122° 37.902' W 
Site Description
Mucky lake margin dominated by Hippuris vulgaris, Polygonum sp., Typha latifolia, and Salix sp. 
Specimen Notes
Locally common at base of rock face rising from water. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
29. Lemna trisulca L.
U.S.A., Washington, San Juan County:
West shore of Martin Lake, east side of Dolphin Bay Road, Orcas Island, Puget Sound.
Elev. 524 ft. 48° 37.3' N, 122° 53.8' W.
With Nuphar, Ceratophyllum, Lemna turionifera, Spirodela polyrrhiza. Green, common aquatic just below surface. Phenology: Vegetative. Origin: Native.
WTU 367115
Peter F. Zika 23377    10 Aug 2007
29. Lemna trisulca L.
Database ID
160418 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
367115 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
23377 
Other Collectors
 
Date Collected
10 Aug 2007 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
West shore of Martin Lake, east side of Dolphin Bay Road, Orcas Island, Puget Sound. 
Elevation
524 ft. 
Coordinates
48° 37.3' N, 122° 53.8' W 
Site Description
With Nuphar, Ceratophyllum, Lemna turionifera, Spirodela polyrrhiza. 
Specimen Notes
Green, common aquatic just below surface. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
30. Lemna trisulca L.
U.S.A., Washington, San Juan County:
East shore of Dream Lake, just north of Dream Lake Road, on west side of Roche Harbor Road, San Juan Island, Puget Sound.
Elev. 229 ft. 48° 35' N, 123° 4.9' W.
Common on aquatic just below surface, with Lemna turionifera, Typha. Green. Phenology: Vegetative. Origin: Native.
WTU 366328
Peter F. Zika 23388    10 Aug 2007
30. Lemna trisulca L.
Database ID
161684 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
366328 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
23388 
Other Collectors
 
Date Collected
10 Aug 2007 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
East shore of Dream Lake, just north of Dream Lake Road, on west side of Roche Harbor Road, San Juan Island, Puget Sound. 
Elevation
229 ft. 
Coordinates
48° 35' N, 123° 4.9' W 
Site Description
Common on aquatic just below surface, with Lemna turionifera, Typha. 
Specimen Notes
Green. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
31. Lemna trisulca L.
U.S.A., Washington, Ferry County:
North side of Route 20, 7 air kilometers southwest of West Kettle Falls.
Elev. 1968 ft. 48° 35.2' N, 118° 11.8' W.
Small pond, with Lemna turionifera, Spirodela polyrrhiza, Carex hystericina, Typha, partial shade of Alnus. Occasional, floating just below water surface. Phenology: Vegetative. Origin: Native.
WTU 368795
Peter F. Zika 23529    29 Aug 2007
31. Lemna trisulca L.
Database ID
166813 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
368795 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
23529 
Other Collectors
 
Date Collected
29 Aug 2007 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Ferry 
Locality
North side of Route 20, 7 air kilometers southwest of West Kettle Falls. 
Elevation
1968 ft. 
Coordinates
48° 35.2' N, 118° 11.8' W 
Site Description
Small pond, with Lemna turionifera, Spirodela polyrrhiza, Carex hystericina, Typha, partial shade of Alnus. 
Specimen Notes
Occasional, floating just below water surface. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
32. Lemna trisulca L.
U.S.A., Washington, Island County:
Cranberry Lake in Deception Pass State Park.
T34N R1E S35. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Just under water surface with Myriophyllum sibiicum, Potamogeton amplifolious, Potamogeton zosteriformis, Potamogeton pusillus, Ceratophyllum demersum, and Elodea canadensis. Floating. Phenology: Vegetative. Origin: Native.
WTU 373425
Jeff Walker 383    7 Aug 2008
32. Lemna trisulca L.
Database ID
171822 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
373425 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by Jeff Walker.  
Type Notes
 
Collector
Jeff Walker 
Collection #
383 
Other Collectors
 
Date Collected
7 Aug 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Island 
Locality
Cranberry Lake in Deception Pass State Park. 
Elevation
 
Coordinates
T34N R1E S35 
Site Description
Just under water surface with Myriophyllum sibiicum, Potamogeton amplifolious, Potamogeton zosteriformis, Potamogeton pusillus, Ceratophyllum demersum, and Elodea canadensis. 
Specimen Notes
Floating. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Araceae
33. Lemna trisulca L.
U.S.A., Idaho, Adams County:
Three Mile Creek at confluence with Little Salmon River, west side of Route 95, 250 meters south of 45th Parallel Drive.
Elev. 1170 m. 45.0041° N, 116.2805° W. Coordinate Source: Specimen Label.
Sunny or partly shaded pools, with Salix, Potamogeton, Elodea, Lemna turionifera, Spirodela polyrrhiza, Ricciocarpus natans. Submerged aquatic, just below surface, green. Origin: Native.
WTU 410499; Barcode: WTU-V-024585
Peter F. Zika 27819    31 May 2016
33. Lemna trisulca L.
Database ID
3109467 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
410499 
Barcode
WTU-V-024585 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
27819 
Other Collectors
 
Date Collected
31 May 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Idaho 
County
Adams 
Locality
Three Mile Creek at confluence with Little Salmon River, west side of Route 95, 250 meters south of 45th Parallel Drive. 
Elevation
1170 m. 
Coordinates
45.0041° N, 116.2805° W 
Site Description
Sunny or partly shaded pools, with Salix, Potamogeton, Elodea, Lemna turionifera, Spirodela polyrrhiza, Ricciocarpus natans. 
Specimen Notes
Submerged aquatic, just below surface, green. 
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
34. Lemna trisulca L.
U.S.A., Washington, King County:
Slough between hiking trail and Route 203, floodplain of Snoqualmie River, 1.5 air km WNW of Novelty Hill.
Elev. 15 m. 47.7016° N, 121.9817° W. Coordinate Source: Specimen Label.
Floating aquatic, just below surface. partial shade, with Lemna turionifera, L. minuta, Wolffia brasiliensis, Spirodela polyrhiza, Nuphar, Phalaris, Alnus rubra, slough between hiking trail and Route 203. Floating aquatic, dark green, partial shade. Origin: Native.
WTU 412532; Barcode: WTU-V-027122
Peter F. Zika 28323    19 Aug 2016
34. Lemna trisulca L.
Database ID
3146164 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412532 
Barcode
WTU-V-027122 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
28323 
Other Collectors
 
Date Collected
19 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Slough between hiking trail and Route 203, floodplain of Snoqualmie River, 1.5 air km WNW of Novelty Hill.  
Elevation
15 m. 
Coordinates
47.7016° N, 121.9817° W 
Site Description
Floating aquatic, just below surface. partial shade, with Lemna turionifera, L. minuta, Wolffia brasiliensis, Spirodela polyrhiza, Nuphar, Phalaris, Alnus rubra, slough between hiking trail and Route 203.  
Specimen Notes
Floating aquatic, dark green, partial shade.  
Phenology
 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
35. Lemna trisulca L.
U.S.A., Washington, Okanogan County:
Buzzard Lake. Approximately 8 km north of Highway 20.
Elev. 1025 m. 48.41946° N, 119.71288° W. Datum: WGS 84. Coordinate uncertainty: 500 meters. Coordinate Source: GPS.
Montane lake dominated by Typha latifolia along shoreline with Nuphar polysepala forming a continuous ring in the emergent zone. Adjacent wetland area and shoreline areas heavily impacted by cattle grazing. Locally common and abundant in shallow water. Phenology: Vegetative. Origin: Native.
WTU 423842; Barcode: WTU-V-064841
David Giblin 6531    3 Oct 2018
35. Lemna trisulca L.
Database ID
3250875 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
423842 
Barcode
WTU-V-064841 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by David Giblin, 12 2019. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
David Giblin 
Collection #
6531 
Other Collectors
 
Date Collected
3 Oct 2018 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Okanogan 
Locality
Buzzard Lake. Approximately 8 km north of Highway 20. 
Elevation
1025 m. 
Coordinates
48.41946° N, 119.71288° W 
Site Description
Montane lake dominated by Typha latifolia along shoreline with Nuphar polysepala forming a continuous ring in the emergent zone. Adjacent wetland area and shoreline areas heavily impacted by cattle grazing. 
Specimen Notes
Locally common and abundant in shallow water. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Araceae
36. Lemna trisulca L.
U.S.A., Washington, Ferry County:
Colville National Forest. Boulder Creek Trail approximately 1 km from beginning of trail.
Elev. 698 m. 48.81506° N, 118.22099° W. Datum: WGS 84. Coordinate uncertainty: 50 meters. Coordinate Source: GPS.
Tannin-rich pond impounded by construction of logging road; pond ringed by old-growth Thuja plicata; Equisetum telmatiae common in understory. Common and abundant beneath water surface where shallow; intermixed with Lemna turionifera. Phenology: Vegetative. Origin: Native.
WTU
David Giblin 6821    23 May 2019
36. Lemna trisulca L.
Database ID
3452579 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Araceae 
Name on Specimen
Lemna trisulca L. 
Accepted Name
Lemna trisulca L. 
Annotation History
1. Lemna trisulca L.
    Annotated by David Giblin, 20 2020. Sources: Flora PNW, 2nd.  
Type Notes
 
Collector
David Giblin 
Collection #
6821 
Other Collectors
 
Date Collected
23 May 2019 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Ferry 
Locality
Colville National Forest. Boulder Creek Trail approximately 1 km from beginning of trail.  
Elevation
698 m. 
Coordinates
48.81506° N, 118.22099° W 
Site Description
Tannin-rich pond impounded by construction of logging road; pond ringed by old-growth Thuja plicata; Equisetum telmatiae common in understory. 
Specimen Notes
Common and abundant beneath water surface where shallow; intermixed with Lemna turionifera.  
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Tab-delimited Text File:
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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.