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Field Descriptions
39 matching records found.
Label Query: Genus = "Betula", Species = "pendula"
Betulaceae
1. Betula pendula Roth
U.S.A., Washington, King County:
Tub Lake, Burien.
Elev. 328 ft. T23N R4E S16 SW 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Openings in bog mat, close to shore. Common weed, branches droop. With Ledum, Spiraea, Kalmia. Phenology: Fertile. Origin: Introduced.
WTU 342043
P. F. Zika 14593    14 Oct 1999
1. Betula pendula Roth
Database ID
5153 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
342043 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14593 
Other Collectors
 
Date Collected
14 Oct 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Tub Lake, Burien. 
Elevation
328 ft. 
Coordinates
T23N R4E S16 SW 1/4 
Site Description
Openings in bog mat, close to shore. 
Specimen Notes
Common weed, branches droop. With Ledum, Spiraea, Kalmia. 
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
2. Betula pendula Roth
U.S.A., Washington, San Juan County:
Central San Juan Island, along road connecting Bailer Hill and Beaverton Valley roads.
48.54667°, -123.0325°. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Moist roadside. With Festuca. A single sapling, 10' or so tall; also present in Friday Harbor. Phenology: Fertile. Origin: Introduced.
WTU 325052
Scott R. Atkinson 399    8 May 1992
2. Betula pendula Roth
Database ID
5154 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
325052 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
2. Betula pendula Roth.
    Annotated by Mildred Arnot, 10 1998.  
Type Notes
 
Collector
Scott R. Atkinson 
Collection #
399 
Other Collectors
 
Date Collected
8 May 1992 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
Central San Juan Island, along road connecting Bailer Hill and Beaverton Valley roads. 
Elevation
 
Coordinates
48.54667°, -123.0325° 
Site Description
Moist roadside. 
Specimen Notes
With Festuca. A single sapling, 10' or so tall; also present in Friday Harbor. 
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
3. Betula pendula Roth
U.S.A., Washington, Snohomish County:
7 road miles N of Rt 2 on Sultan Basin Road, 1.5 miles of Kellogg Lake.
Elev. 1640 ft. T28N R8E S10 SE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Along gravel fill of logging road, edge of clearcut, full sun. With Rubus spectabilis, R. discolor, R. laciniatus, Pteridium, Salix sitchensis, Anaphalis, Tsuga heterophylla. Phenology: Fertile. Origin: Introduced.
WTU 337374
P. F. Zika 13673    25 Oct 1998
3. Betula pendula Roth
Database ID
5155 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
337374 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
13673 
Other Collectors
 
Date Collected
25 Oct 1998 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
7 road miles N of Rt 2 on Sultan Basin Road, 1.5 miles of Kellogg Lake. 
Elevation
1640 ft. 
Coordinates
T28N R8E S10 SE 1/4 
Site Description
Along gravel fill of logging road, edge of clearcut, full sun. 
Specimen Notes
With Rubus spectabilis, R. discolor, R. laciniatus, Pteridium, Salix sitchensis, Anaphalis, Tsuga heterophylla. 
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
4. Betula pendula Roth
U.S.A., Washington, Whatcom County:
Junction of I-5 S and bridge for Loomis Trail Road.
Elev. 164 ft. T40N R1E S16 SE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Roadside. Common roadside weed, with Cornus, Rubus laciniatus, Pseudotsuga. Phenology: Fertile. Origin: Introduced.
WTU 340116
P. F. Zika 14411    23 Sep 1999
4. Betula pendula Roth
Database ID
5156 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
340116 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14411 
Other Collectors
 
Date Collected
23 Sep 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Whatcom 
Locality
Junction of I-5 S and bridge for Loomis Trail Road. 
Elevation
164 ft. 
Coordinates
T40N R1E S16 SE 1/4 
Site Description
Roadside. 
Specimen Notes
Common roadside weed, with Cornus, Rubus laciniatus, Pseudotsuga. 
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
5. Betula pendula Roth
U.S.A., Washington, Snohomish County:
Jetty Island, mouth of Snohomish River, Puget Sound.
Elev. 10 ft. T29N R5E S7. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Dry sand on dredge spoils, full sun with Cytissus scoparius. 10 m tree, white bark with black rough breaks at base. Phenology: Flowers & Fruits. Origin: Introduced.
WTU 352908
P. F. Zika 17880    18 Sep 2002
with F. Weinmann
5. Betula pendula Roth
Database ID
25887 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
352908 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
17880 
Other Collectors
F. Weinmann 
Date Collected
18 Sep 2002 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Jetty Island, mouth of Snohomish River, Puget Sound. 
Elevation
10 ft. 
Coordinates
T29N R5E S7 
Site Description
Dry sand on dredge spoils, full sun with Cytissus scoparius. 
Specimen Notes
10 m tree, white bark with black rough breaks at base. 
Phenology
Flowers & Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
6. Betula pendula Roth
U.S.A., Washington, King County:
Near north shore of Lake Sammamish, east of Sammamish River, Marymoor Park.
Elev. 32 ft. T25N R5E S13 NE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Weed naturalized in open wet woods. Phenology: Flowers & Fruits. Origin: Introduced.
WTU 14566
P. F. Zika     7 Oct 1999
with A. L. Jacobson
6. Betula pendula Roth
Database ID
59479 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
14566 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
 
Other Collectors
A. L. Jacobson 
Date Collected
7 Oct 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Near north shore of Lake Sammamish, east of Sammamish River, Marymoor Park. 
Elevation
32 ft. 
Coordinates
T25N R5E S13 NE 1/4 
Site Description
Weed naturalized in open wet woods. 
Specimen Notes
 
Phenology
Flowers & Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
7. Betula pendula Roth
U.S.A., Washington, King County:
Panther Lake, 2.5 miles west of Lake Youngs, 4 miles south of Renton.
Elev. 443 ft. T22N R5E S5 SE 1/4. Datum: NAD 27. Coordinate uncertainty: 200 meters. Georeferenced by WTU Staff. Coordinate Source: Georeferenced.
Naturalized in bog mat, with Carex arcta, Sphagnum. Leaves yellow, weedy shrubs. Phenology: Fruits. Origin: Introduced.
WTU 339454
P. F. Zika 14609    15 Oct 1999
with F. Weinmann
7. Betula pendula Roth
Database ID
59484 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
339454 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14609 
Other Collectors
F. Weinmann 
Date Collected
15 Oct 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Panther Lake, 2.5 miles west of Lake Youngs, 4 miles south of Renton. 
Elevation
443 ft. 
Coordinates
T22N R5E S5 SE 1/4 
Site Description
Naturalized in bog mat, with Carex arcta, Sphagnum. 
Specimen Notes
Leaves yellow, weedy shrubs. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
8. Betula pendula Roth
U.S.A., Washington, King County:
Between gas station and Route 520 ramp; 0.2 kilometers east of Portage Bay, Montlake, Seattle.
Elev. 49 ft. T25N R4E S21 NE 1/4 of NE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
In hedgerow, disturbed ground, with Rubus discolor, Acer macrophyllum. Weed. Phenology: Fruits. Origin: Introduced.
WTU 337373
P. F. Zika 13675    25 Oct 1998
8. Betula pendula Roth
Database ID
59485 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
337373 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
13675 
Other Collectors
 
Date Collected
25 Oct 1998 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Between gas station and Route 520 ramp; 0.2 kilometers east of Portage Bay, Montlake, Seattle. 
Elevation
49 ft. 
Coordinates
T25N R4E S21 NE 1/4 of NE 1/4 
Site Description
In hedgerow, disturbed ground, with Rubus discolor, Acer macrophyllum. 
Specimen Notes
Weed. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
9. Betula pendula Roth
U.S.A., Washington, King County:
Marsh Island, Union Bay, Seattle.
Elev. 13 ft. T25N R4E S21 NE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
In wetlands, with Populus, Salix lucida, S. sitchensis, Spiraea douglasii, Lythrum salicaria. Naturalized trees, to 4 meters tall, common. Phenology: Fruits. Origin: Introduced.
WTU 337365
P. F. Zika 13649    9 Oct 1998
9. Betula pendula Roth
Database ID
59488 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
337365 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
13649 
Other Collectors
 
Date Collected
9 Oct 1998 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Marsh Island, Union Bay, Seattle. 
Elevation
13 ft. 
Coordinates
T25N R4E S21 NE 1/4 
Site Description
In wetlands, with Populus, Salix lucida, S. sitchensis, Spiraea douglasii, Lythrum salicaria. 
Specimen Notes
Naturalized trees, to 4 meters tall, common. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
10. Betula pendula Roth
U.S.A., Washington, King County:
Marsh Island, Union Bay, Seattle.
Elev. 13 ft. T25N R4E S21 NE 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
In wetlands, with Populus, Salix lucida, S. sitchensis, Spiraea douglasii, Lythrum salicaria. Common naturalized tree 4 meters tall. Phenology: Flowers & Fruits. Origin: Introduced.
WTU 336840
P. F. Zika 13649    9 Oct 1998
10. Betula pendula Roth
Database ID
59490 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
336840 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
13649 
Other Collectors
 
Date Collected
9 Oct 1998 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Marsh Island, Union Bay, Seattle. 
Elevation
13 ft. 
Coordinates
T25N R4E S21 NE 1/4 
Site Description
In wetlands, with Populus, Salix lucida, S. sitchensis, Spiraea douglasii, Lythrum salicaria. 
Specimen Notes
Common naturalized tree 4 meters tall. 
Phenology
Flowers & Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
11. Betula pendula Roth
U.S.A., Washington, King County:
North half of Mercer Slough, Bellevue.
Elev. 16 ft. T24N R5E S5 E 1/2. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Damp ground, thickets. Naturalized weed, twigs pendant, bark white with rough black zones at base of trunk. Phenology: Flowers & Fruits. Origin: Introduced.
WTU 342076
P. F. Zika 14549    6 Oct 1999
11. Betula pendula Roth
Database ID
59492 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
342076 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14549 
Other Collectors
 
Date Collected
6 Oct 1999 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
North half of Mercer Slough, Bellevue. 
Elevation
16 ft. 
Coordinates
T24N R5E S5 E 1/2 
Site Description
Damp ground, thickets. 
Specimen Notes
Naturalized weed, twigs pendant, bark white with rough black zones at base of trunk. 
Phenology
Flowers & Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
12. Betula pendula Roth
U.S.A., Oregon, Multnomah County:
Troutdale; west side of Sandy River near its confluence with the Columbia River.
Elev. 29 ft. T1N R3E SDLC60.
Associated species: Populus, Salix, Rubus, Agrostis, Pseudotsuga. Tree to 6.1 meters tall, naturalized. Phenology: Flowers & Fruits. Origin: Introduced.
WTU 337537
Richard R. Halse 5188    17 Sep 1996
12. Betula pendula Roth
Database ID
59496 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
337537 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Richard R. Halse 
Collection #
5188 
Other Collectors
 
Date Collected
17 Sep 1996 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Multnomah 
Locality
Troutdale; west side of Sandy River near its confluence with the Columbia River. 
Elevation
29 ft. 
Coordinates
T1N R3E SDLC60 
Site Description
 
Specimen Notes
Associated species: Populus, Salix, Rubus, Agrostis, Pseudotsuga. Tree to 6.1 meters tall, naturalized. 
Phenology
Flowers & Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
13. Betula pendula Roth
Canada, British Columbia
South end of 72nd Street, city of Delta, South of Fraser River.
Elev. 6 ft.
In cranberry fields and in adjacent undisturbed peatlands, with Viola lanceolata, Rumex acetosella. White bark, drooping branches, common weed. Phenology: Flowers & Fruits.
WTU 340612
P. F. Zika 14391    23 Sep 1999
13. Betula pendula Roth
Database ID
59499 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
340612 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
14391 
Other Collectors
 
Date Collected
23 Sep 1999 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
South end of 72nd Street, city of Delta, South of Fraser River. 
Elevation
6 ft. 
Coordinates
 
Site Description
In cranberry fields and in adjacent undisturbed peatlands, with Viola lanceolata, Rumex acetosella. 
Specimen Notes
White bark, drooping branches, common weed. 
Phenology
Flowers & Fruits 
Origin
 
Cultivated?
No 
Imaged?
No 

Betulaceae
14. Betula pendula Roth
Canada, British Columbia
0.5 miles south of Westminster Road on Sidaway Road, southeast Lulu Island, city of Richmond.
Elev. 16 ft.
In wet peaty soil, full sun, with Vaccinium macrocarpon, Juncus effusus, Spiraea douglasii, ditches among cranberry fields, and forest edges (also commonly cultivated in vicinity). Abundant weedy shrub or small tree, fully naturalized. [Two specimens on this page: Betula pubescens]. Phenology: Flowers & Fruits.
WTU 337357B
P. F. Zika 13679    27 Oct 1998
14. Betula pendula Roth
Database ID
59529 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
337357B 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
13679 
Other Collectors
 
Date Collected
27 Oct 1998 
Verbatim Date
 
Country
Canada 
State or Province
British Columbia 
County
 
Locality
0.5 miles south of Westminster Road on Sidaway Road, southeast Lulu Island, city of Richmond. 
Elevation
16 ft. 
Coordinates
 
Site Description
In wet peaty soil, full sun, with Vaccinium macrocarpon, Juncus effusus, Spiraea douglasii, ditches among cranberry fields, and forest edges (also commonly cultivated in vicinity). 
Specimen Notes
Abundant weedy shrub or small tree, fully naturalized. [Two specimens on this page: Betula pubescens]. 
Phenology
Flowers & Fruits 
Origin
 
Cultivated?
No 
Imaged?
No 

Betulaceae
15. Betula pendula Roth
U.S.A., Washington, King County:
Northwest shore of Lake Union, north Northlake Way near Stone Way north. Fremont, Seattle.
Elev. 19 ft. T25N R4E S18. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Several self-sown sprouts, the smallest pubescent (thus juvenile shoots similar to B. pubescens). Phenology: Fruits. Origin: Introduced.
WTU 358859
P. F. Zika 15831    29 Mar 2001
with A. L. Jacobson
15. Betula pendula Roth
Database ID
71249 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
358859 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
15831 
Other Collectors
A. L. Jacobson 
Date Collected
29 Mar 2001 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Northwest shore of Lake Union, north Northlake Way near Stone Way north. Fremont, Seattle. 
Elevation
19 ft. 
Coordinates
T25N R4E S18 
Site Description
 
Specimen Notes
Several self-sown sprouts, the smallest pubescent (thus juvenile shoots similar to B. pubescens). 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
16. Betula pendula Roth
U.S.A., Washington, Skagit County:
1/2 mile west of the end of Rawlins Road, on south shore of North Fork Skagit River near its mouth; 2.6 miles southeast of La Conner.
Elev. 5 ft. 48° 21' 26" N, 122° 28' 1" W.
Open grassy slightly brackish marsh bordering river. Medium-sized trees to 10 meters tall with strongly pendulous branches, white bark. Phenology: Flowers. Origin: Introduced.
WTU 361622
Ben Legler 1412    28 Mar 2004
16. Betula pendula Roth
Database ID
90219 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
361622 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Ben Legler, 2004.  
Type Notes
 
Collector
Ben Legler 
Collection #
1412 
Other Collectors
 
Date Collected
28 Mar 2004 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Skagit 
Locality
1/2 mile west of the end of Rawlins Road, on south shore of North Fork Skagit River near its mouth; 2.6 miles southeast of La Conner. 
Elevation
5 ft. 
Coordinates
48° 21' 26" N, 122° 28' 1" W 
Site Description
Open grassy slightly brackish marsh bordering river. 
Specimen Notes
Medium-sized trees to 10 meters tall with strongly pendulous branches, white bark. 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
17. Betula pendula Roth
U.S.A., Washington, King County:
Montlake Fill east of University of Washington Campus, Seattle.
Elev. 30 ft. 47° 39' 21" N, 122° 17' 43" W. Datum: WGS 84. Coordinate uncertainty: 200 meters. Coordinate Source: Digital map.
Open meadow-like area with scattered thickets and seasonally wet depressions over an old capped landfill. Small tree on edge of parking area; branches pendulous. Phenology: Flowers. Origin: Native.
WTU
Ben Legler 3198    2 Mar 2006
17. Betula pendula Roth
Database ID
156380 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Ben Legler.  
Type Notes
 
Collector
Ben Legler 
Collection #
3198 
Other Collectors
 
Date Collected
2 Mar 2006 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Montlake Fill east of University of Washington Campus, Seattle. 
Elevation
30 ft. 
Coordinates
47° 39' 21" N, 122° 17' 43" W 
Site Description
Open meadow-like area with scattered thickets and seasonally wet depressions over an old capped landfill. 
Specimen Notes
Small tree on edge of parking area; branches pendulous. 
Phenology
Flowers 
Origin
Native 
Cultivated?
No 
Imaged?
No 

Betulaceae
18. Betula pendula Roth
U.S.A., Oregon, Benton County:
Blueberry Drive, near junction of 53rd and Route 20/34; southwest section of city of Corvallis.
Elev. 260 ft. T12S R5W S5 SW 1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
Self-sown weed, in vicinity of cultivated ornamentals. Phenology: Vegetative. Origin: Introduced.
WTU 368569
Peter F. Zika 11936    30 Sep 1992
18. Betula pendula Roth
Database ID
165997 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
368569 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
11936 
Other Collectors
 
Date Collected
30 Sep 1992 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Benton 
Locality
Blueberry Drive, near junction of 53rd and Route 20/34; southwest section of city of Corvallis. 
Elevation
260 ft. 
Coordinates
T12S R5W S5 SW 1/4 
Site Description
 
Specimen Notes
Self-sown weed, in vicinity of cultivated ornamentals. 
Phenology
Vegetative 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
19. Betula pendula Roth
U.S.A., Washington, San Juan County:
Southwest shore of Hummel Lake, Lopez Island, Puget Sound.
Elev. 100 ft. T35N R2W S23 NE 1/4. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Damp thickets. Bark white, adventive, cultivated trees in vicinity. Phenology: Flowers. Origin: Introduced. Cultivated.
WTU 368705
P. F. Zika 15004    21 May 2000
19. Betula pendula Roth
Database ID
166797 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
368705 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
15004 
Other Collectors
 
Date Collected
21 May 2000 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
Southwest shore of Hummel Lake, Lopez Island, Puget Sound. 
Elevation
100 ft. 
Coordinates
T35N R2W S23 NE 1/4 
Site Description
Damp thickets. 
Specimen Notes
Bark white, adventive, cultivated trees in vicinity. 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
Yes 
Imaged?
No 

Betulaceae
20. Betula pendula Roth
U.S.A., Washington, Grant County:
Babcock Bench. Along lightly forested edge of Columbia River.
Elev. 540 ft. 47° 9.9864' N, 120° 0.368' W.
Riparian strip dominated by Ulmus pumila and Morus alba. 8 meters tall; uncommon. Phenology: Fruits. Origin: Introduced.
WTU 380815
Joe Arnett 08-53    29 Apr 2008
20. Betula pendula Roth
Database ID
169926 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
380815 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by David Giblin, 12 2008. Sources: Stace 1997.  
Type Notes
 
Collector
Joe Arnett 
Collection #
08-53 
Other Collectors
 
Date Collected
29 Apr 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Grant 
Locality
Babcock Bench. Along lightly forested edge of Columbia River. 
Elevation
540 ft. 
Coordinates
47° 9.9864' N, 120° 0.368' W 
Site Description
Riparian strip dominated by Ulmus pumila and Morus alba. 
Specimen Notes
8 meters tall; uncommon. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
21. Betula pendula Roth
U.S.A., Washington, San Juan County:
Near Second Street, Friday Harbor, San Juan Island, Puget Sound.
Elev. 80 ft. T35N R3W S13 NW. Datum: WGS 84. Coordinate uncertainty: 10000 meters. Georeferenced by WTU Staff. Coordinate Source: GeoLocate.
Widely scattered wind-sown adventives, crack in concrete sidewalk. Phenology: Fruits. Origin: Introduced.
WTU 372830
Peter F. Zika 15044    28 May 2000
21. Betula pendula Roth
Database ID
170674 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
372830 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Peter F. Zika.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
15044 
Other Collectors
 
Date Collected
28 May 2000 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
San Juan 
Locality
Near Second Street, Friday Harbor, San Juan Island, Puget Sound. 
Elevation
80 ft. 
Coordinates
T35N R3W S13 NW 
Site Description
Widely scattered wind-sown adventives, crack in concrete sidewalk. 
Specimen Notes
 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
22. Betula pendula Roth
U.S.A., Oregon, Multnomah County:
Mouth of Sandy River, S shore of Columbia R., NE of Troutdale airport.
Elev. 20 ft. T1N R3E S25 NW1/4 of NE1/4. Datum: NAD 27. Coordinate uncertainty: 805 meters. Georeferenced by Ben Legler. Coordinate Source: TRS2LL.
With Populus trichocarpa, Prunus avium, Rubus discolor. Naturalized, weedy over a quarter section, forming dense monocultures in places, 8 m tall bark white and peeling, fissured at base. Phenology: Fertile. Origin: Introduced.
WTU 372304
P. F. Zika 11484    21 Apr 1992
22. Betula pendula Roth
Database ID
171018 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
372304 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
11484 
Other Collectors
 
Date Collected
21 Apr 1992 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Multnomah 
Locality
Mouth of Sandy River, S shore of Columbia R., NE of Troutdale airport. 
Elevation
20 ft. 
Coordinates
T1N R3E S25 NW1/4 of NE1/4 
Site Description
With Populus trichocarpa, Prunus avium, Rubus discolor. 
Specimen Notes
Naturalized, weedy over a quarter section, forming dense monocultures in places, 8 m tall bark white and peeling, fissured at base. 
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
23. Betula pendula Roth
U.S.A., Oregon, Benton County:
North Corvallis; east side of State Highway 99W, between highway and railroad.
Elev. 225 ft. UTM Zone 10, 479735E, 4936426N. Datum: NAD 27.
Weedy meadow. With Schedonorus arundinaceus, Calystegia atriplicifolia. Several trees ranging from 1 to 3 meters in height. Phenology: Flowers. Origin: Introduced.
WTU 378451
R.E. Brainerd 308    28 Apr 2003
23. Betula pendula Roth
Database ID
174712 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
378451 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
R.E. Brainerd 
Collection #
308 
Other Collectors
 
Date Collected
28 Apr 2003 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Benton 
Locality
North Corvallis; east side of State Highway 99W, between highway and railroad. 
Elevation
225 ft. 
Coordinates
UTM Zone 10, 479735E, 4936426N 
Site Description
Weedy meadow. With Schedonorus arundinaceus, Calystegia atriplicifolia. 
Specimen Notes
Several trees ranging from 1 to 3 meters in height. 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
24. Betula pendula Roth
U.S.A., Washington, King County:
Shore of Portage Bay, Montlake, Seattle.
Elev. 16 ft. 47° 39' N, 122° 19' W; T25N R4E S21.
Thickets at edge of damp woodland. Self-sown, thick white bark breaking into rough black zones, branches drooping, 10 meters tall. Phenology: Fruits. Origin: Introduced.
WTU 375395
P. F. Zika 16309    20 Jun 2001
with A. L. Jacobson
24. Betula pendula Roth
Database ID
174840 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
375395 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
P. F. Zika 
Collection #
16309 
Other Collectors
A. L. Jacobson 
Date Collected
20 Jun 2001 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Shore of Portage Bay, Montlake, Seattle. 
Elevation
16 ft. 
Coordinates
47° 39' N, 122° 19' W; T25N R4E S21 
Site Description
Thickets at edge of damp woodland. 
Specimen Notes
Self-sown, thick white bark breaking into rough black zones, branches drooping, 10 meters tall. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
25. Betula pendula Roth
U.S.A., Washington, Benton County:
West bank of Columbia River, near Nelson Island; south of campus of Washington State University Tri-Cities; Richland.
Elev. 344 ft. 46° 17' N, 119° 16.3' W; T10N R28E S35.
Rocky fill, with Ailanthus, Robinia, Morus, Populus balsamifera, Salix exigua, Ulmus pumila. White bark, black rough zones at base of trunk; branches droop; 6 meter tree, adventive, uncommon, naturalized. Phenology: Fruits. Origin: Introduced.
WTU 379038
Peter F. Zika 18048    6 Oct 2002
25. Betula pendula Roth
Database ID
175354 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
379038 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
18048 
Other Collectors
 
Date Collected
6 Oct 2002 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Benton 
Locality
West bank of Columbia River, near Nelson Island; south of campus of Washington State University Tri-Cities; Richland. 
Elevation
344 ft. 
Coordinates
46° 17' N, 119° 16.3' W; T10N R28E S35 
Site Description
Rocky fill, with Ailanthus, Robinia, Morus, Populus balsamifera, Salix exigua, Ulmus pumila. 
Specimen Notes
White bark, black rough zones at base of trunk; branches droop; 6 meter tree, adventive, uncommon, naturalized. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
26. Betula pendula Roth
U.S.A., Oregon, Lane County:
North of west 11th avenue, between north Danebo Avenue and Beltline Highway, West Eugene, Eugene District of Bureau of Land Management.
Elev. 393 ft. 44° 3' N, 123° 10.4' W.
Naturalized tree, bark white with black blocky cracks at base; blank of Amazon Slough canal, full sun, wet prairie remnant. Phenology: Vegetative. Origin: Introduced.
WTU 379736
Peter F. Zika 10619    23 Aug 1988
26. Betula pendula Roth
Database ID
176326 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
379736 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
10619 
Other Collectors
 
Date Collected
23 Aug 1988 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Lane 
Locality
North of west 11th avenue, between north Danebo Avenue and Beltline Highway, West Eugene, Eugene District of Bureau of Land Management. 
Elevation
393 ft. 
Coordinates
44° 3' N, 123° 10.4' W 
Site Description
 
Specimen Notes
Naturalized tree, bark white with black blocky cracks at base; blank of Amazon Slough canal, full sun, wet prairie remnant. 
Phenology
Vegetative 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
27. Betula pendula Roth
U.S.A., Oregon, Benton County:
Eastern edge of Philomath at old Willamette Industries millsite.
Elev. 300 ft. UTM Zone 10, 472468E, 4932270N. Datum: NAD 27.
Bottom of drained log pond at edge of Salix hookeriana/Typha latifolia marsh. With Salix hookeriana, Typha latifolia, Salix scouleriana, Juncus effusus, Holcus lanatus. Tree, 8 meters tall. Phenology: Fruits. Origin: Introduced.
WTU 382407
R.E. Brainerd 878    11 Jul 2007
27. Betula pendula Roth
Database ID
178800 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
382407 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
R.E. Brainerd 
Collection #
878 
Other Collectors
 
Date Collected
11 Jul 2007 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Benton 
Locality
Eastern edge of Philomath at old Willamette Industries millsite. 
Elevation
300 ft. 
Coordinates
UTM Zone 10, 472468E, 4932270N 
Site Description
Bottom of drained log pond at edge of Salix hookeriana/Typha latifolia marsh. With Salix hookeriana, Typha latifolia, Salix scouleriana, Juncus effusus, Holcus lanatus. 
Specimen Notes
Tree, 8 meters tall. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
28. Betula pendula Roth
U.S.A., Oregon, Benton County:
West Corvallis in vacant area east of 53rd Street and north of Western Boulevard.
Elev. 260 ft. UTM Zone 10, 475511E, 4933765N. Datum: NAD 83.
Weedy opening in young Douglas-fir plantation. With Pseudotsuga menziesii, Crataegus monogyna, Rubus armeniacus. Tree, 5 meters tall; bark smooth, gray-brown. Phenology: Flowers. Origin: Introduced.
WTU 387863
R.E. Brainerd 1373    20 May 2009
28. Betula pendula Roth
Database ID
184616 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
387863 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
R.E. Brainerd 
Collection #
1373 
Other Collectors
 
Date Collected
20 May 2009 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Benton 
Locality
West Corvallis in vacant area east of 53rd Street and north of Western Boulevard. 
Elevation
260 ft. 
Coordinates
UTM Zone 10, 475511E, 4933765N 
Site Description
Weedy opening in young Douglas-fir plantation. With Pseudotsuga menziesii, Crataegus monogyna, Rubus armeniacus. 
Specimen Notes
Tree, 5 meters tall; bark smooth, gray-brown. 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
29. Betula pendula Roth
U.S.A., Washington, Cowlitz County:
East bank of Cowlitz River, below junction of Front Avenue Northwest and Huntington Avenue North, Castle Rock.
Elev. 49 ft. 46° 16.8' N, 122° 54.5' W.
Sandy riparian forest, partial shade, with Alnus rubra, Populus balsamifera. White bark, broken by black blocky fissures at base, adventive trees 1-12 meters tall, occasional. Photographed. Phenology: Fruits. Origin: Introduced.
WTU 389709
Peter F. Zika 26157    21 Oct 2012
29. Betula pendula Roth
Database ID
186344 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
389709 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
26157 
Other Collectors
 
Date Collected
21 Oct 2012 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Cowlitz 
Locality
East bank of Cowlitz River, below junction of Front Avenue Northwest and Huntington Avenue North, Castle Rock. 
Elevation
49 ft. 
Coordinates
46° 16.8' N, 122° 54.5' W 
Site Description
Sandy riparian forest, partial shade, with Alnus rubra, Populus balsamifera. 
Specimen Notes
White bark, broken by black blocky fissures at base, adventive trees 1-12 meters tall, occasional. Photographed. 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
30. Betula pendula Roth
U.S.A., Oregon, Polk County:
Eastern edge of Monmouth on the east side of Monmouth-Independence Highway.
Elev. 195 ft. UTM Zone 10, 482682E, 4966319N. Datum: WGS 84.
Moist scrub-shrub community. With Quercus garryana, Crataegus suksdorfii, Malus sieboldii, Prunus avium, Rubus bifrons. Tree, 15 meters tall; many escaped and naturalized in this location. Phenology: Flowers and Fruits. Origin: Introduced.
WTU 396477
R.E. Brainerd 2138    30 Apr 2013
30. Betula pendula Roth
Database ID
189615 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
396477 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
R.E. Brainerd 
Collection #
2138 
Other Collectors
 
Date Collected
30 Apr 2013 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Polk 
Locality
Eastern edge of Monmouth on the east side of Monmouth-Independence Highway. 
Elevation
195 ft. 
Coordinates
UTM Zone 10, 482682E, 4966319N 
Site Description
Moist scrub-shrub community. With Quercus garryana, Crataegus suksdorfii, Malus sieboldii, Prunus avium, Rubus bifrons. 
Specimen Notes
Tree, 15 meters tall; many escaped and naturalized in this location. 
Phenology
Flowers and Fruits 
Origin
Introduced 
Cultivated?
No 
Imaged?
No 

Betulaceae
31. Betula pendula Roth
U.S.A., Washington, Snohomish County:
Warm Beach Senior Community, Stanwood.
48.181878°, -122.35046°. Datum: WGS 84. Coordinate uncertainty: 360 meters. Georeferenced by Maria Yousoufian. Coordinate Source: Digital Map.
Landscape tree. Phenology: Fruits. Origin: Introduced. Cultivated.
WTU 401126; Barcode: WTU-V-8592
Clayton Haberman s.n.    11 Jul 2008
31. Betula pendula Roth
Database ID
192816 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
401126 
Barcode
WTU-V-8592 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Clayton Haberman 
Collection #
s.n. 
Other Collectors
 
Date Collected
11 Jul 2008 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Snohomish 
Locality
Warm Beach Senior Community, Stanwood. 
Elevation
 
Coordinates
48.181878°, -122.35046° 
Site Description
Landscape tree. 
Specimen Notes
 
Phenology
Fruits 
Origin
Introduced 
Cultivated?
Yes 
Imaged?
Yes 

Betulaceae
32. Betula pendula Roth
Germany, North Rhine-Westphalia
Siegen.
Landscape tree. Lower bol bark thick, dark gray, deep fissures. Phenology: Vegetative. Origin: Native.
WTU 401129; Barcode: WTU-V-8594
Clayton Haberman s.n.    5 Nov 2002
32. Betula pendula Roth
Database ID
192818 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
401129 
Barcode
WTU-V-8594 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Clayton Haberman 
Collection #
s.n. 
Other Collectors
 
Date Collected
5 Nov 2002 
Verbatim Date
 
Country
Germany 
State or Province
North Rhine-Westphalia 
County
 
Locality
Siegen. 
Elevation
 
Coordinates
 
Site Description
Landscape tree. 
Specimen Notes
Lower bol bark thick, dark gray, deep fissures. 
Phenology
Vegetative 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
33. Betula pendula Roth
U.S.A., Oregon, Clackamas County:
Marylhurst Park, West Linn.
45.381° N, 122.627° W. Coordinate Source: Specimen Label.
Residential/park. Naturalized. Phenology: Flowers. Origin: Introduced.
WTU 401488; Barcode: WTU-V-8657
J. Lesh 102213JL1208    22 Oct 2013
33. Betula pendula Roth
Database ID
193258 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
401488 
Barcode
WTU-V-8657 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by J. Lesh.  
Type Notes
 
Collector
J. Lesh 
Collection #
102213JL1208 
Other Collectors
 
Date Collected
22 Oct 2013 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Clackamas 
Locality
Marylhurst Park, West Linn. 
Elevation
 
Coordinates
45.381° N, 122.627° W 
Site Description
Residential/park. 
Specimen Notes
Naturalized. 
Phenology
Flowers 
Origin
Introduced 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
34. Betula pendula Roth
U.S.A., Washington, King County:
Near Issaquah adjacent to equestrian center and residential development.
47.58204° N, 122.0607° W. Coordinate Source: GPS.
Peat bog/fen. Occurs with Ledum groenlandicum, Spiraea douglasii, Pteridium. Peat drying out saturated at 50 centimeters. Abundance: Dominant. Growth Habit: Erect tree, drooping branches with catkins, also grows branches out of leaning trunk. Site ID: NWCA16-4892. Visit #1. Collection #Q1 (QA Voucher). Phenology: Fruits. Origin: Native.
WTU 411130; Barcode: WTU-V-025458
Patricia Johnson NWCA16-4892-V1-Q1    2 Aug 2016
34. Betula pendula Roth
Database ID
2834285 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
411130 
Barcode
WTU-V-025458 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Ben Legler, 16 2016. Sources: Draft Revised Flora of PNW.  
Type Notes
 
Collector
Patricia Johnson 
Collection #
NWCA16-4892-V1-Q1 
Other Collectors
 
Date Collected
2 Aug 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Near Issaquah adjacent to equestrian center and residential development. 
Elevation
 
Coordinates
47.58204° N, 122.0607° W 
Site Description
Peat bog/fen. Occurs with Ledum groenlandicum, Spiraea douglasii, Pteridium. Peat drying out saturated at 50 centimeters. 
Specimen Notes
Abundance: Dominant. Growth Habit: Erect tree, drooping branches with catkins, also grows branches out of leaning trunk. Site ID: NWCA16-4892. Visit #1. Collection #Q1 (QA Voucher). 
Phenology
Fruits 
Origin
Native 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
35. Betula pendula Roth
U.S.A., Washington, King County:
Along paved path through center of South Woods Park, Shoreline.
Elev. 120 m. 47.73858° N, 122.304826° W. Datum: WGS 84. Coordinate uncertainty: 13 meters. Georeferenced by Ben Legler. Coordinate Source: Digital Map.
Mature Pseudotsuga menziesii forest with brushy understory of Gaultheria shallon, Vaccinium parviflorum, and naturalized exotic shrubs. Several small, slender trees ca 5-8 meters tall in shade near path, growing wild; bark white to brownish-gray, exfoliating in horizontal strips; young twigs drooping; leaves rhombic, doubly serrate, acuminate, mostly with 5 pairs of lateral veins; catkins pendent; fruits broadly winged. Phenology: Fruits.
WTU
Ben Legler 14377    8 Sep 2016
35. Betula pendula Roth
Database ID
2834402 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Ben Legler, 2016.  
Type Notes
 
Collector
Ben Legler 
Collection #
14377 
Other Collectors
 
Date Collected
8 Sep 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Along paved path through center of South Woods Park, Shoreline. 
Elevation
120 m. 
Coordinates
47.73858° N, 122.304826° W 
Site Description
Mature Pseudotsuga menziesii forest with brushy understory of Gaultheria shallon, Vaccinium parviflorum, and naturalized exotic shrubs. 
Specimen Notes
Several small, slender trees ca 5-8 meters tall in shade near path, growing wild; bark white to brownish-gray, exfoliating in horizontal strips; young twigs drooping; leaves rhombic, doubly serrate, acuminate, mostly with 5 pairs of lateral veins; catkins pendent; fruits broadly winged. 
Phenology
Fruits 
Origin
 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
36. Betula pendula Roth
U.S.A., Washington, King County:
Southwest shore of Bassett Pond; 4.9 air km east of Woodinville.
Elev. 76 m. 47.748176° N, 122.098103° W. Datum: WGS 84. Coordinate uncertainty: 13 meters. Georeferenced by Ben Legler. Coordinate Source: Digital Map.
Edge of large open pond, bordered by Spiraea douglasii and Betula pendula, open water with Spirodella, Wolffia. Bark white, peeling in horizontal strips; leaves acuminate, base broadly cuneate to truncate; large trees and saplings, abundant and naturalized around lake. Phenology: Vegetative.
WTU
Ben Legler 14414    24 Sep 2016
36. Betula pendula Roth
Database ID
2834438 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
 
Barcode
 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.
    Annotated by Ben Legler, 2016.  
Type Notes
 
Collector
Ben Legler 
Collection #
14414 
Other Collectors
 
Date Collected
24 Sep 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
Southwest shore of Bassett Pond; 4.9 air km east of Woodinville. 
Elevation
76 m. 
Coordinates
47.748176° N, 122.098103° W 
Site Description
Edge of large open pond, bordered by Spiraea douglasii and Betula pendula, open water with Spirodella, Wolffia. 
Specimen Notes
Bark white, peeling in horizontal strips; leaves acuminate, base broadly cuneate to truncate; large trees and saplings, abundant and naturalized around lake. 
Phenology
Vegetative 
Origin
 
Cultivated?
No 
Imaged?
No 

Betulaceae
37. Betula pendula Roth
U.S.A., Washington, King County:
124th Avenue NE, N of Main Street, 2.6 air km WNW of Larsen Lake, Bellevue. ¶
Elev. 60 m. 47.6104° N, 122.175° W. Coordinate Source: Specimen Label.
Under powerlines, partly shaded thickets, with Salix scouleriana, Pseudotsuga menziesii, Gaultheria shallon, Rubus ursinus, R. armeniacus, Holodiscus discolor. 6 m adventive trees, several seen under powerlines. Phenology: Fertile. Origin: Introduced.
WTU 412750; Barcode: WTU-V-028004
Peter F. Zika 27857    4 Jun 2016
with E.R. Alverson
37. Betula pendula Roth
Database ID
3145653 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
412750 
Barcode
WTU-V-028004 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Peter F. Zika 
Collection #
27857 
Other Collectors
E.R. Alverson 
Date Collected
4 Jun 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
King 
Locality
124th Avenue NE, N of Main Street, 2.6 air km WNW of Larsen Lake, Bellevue. ¶ 
Elevation
60 m. 
Coordinates
47.6104° N, 122.175° W 
Site Description
Under powerlines, partly shaded thickets, with Salix scouleriana, Pseudotsuga menziesii, Gaultheria shallon, Rubus ursinus, R. armeniacus, Holodiscus discolor.  
Specimen Notes
6 m adventive trees, several seen under powerlines.  
Phenology
Fertile 
Origin
Introduced 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
38. Betula pendula Roth
U.S.A., Oregon, Multnomah County:
Hoyt Arboretum.
45.5195° N, 122.7186° W. Coordinate Source: Specimen Label.
Partial, mixed canopy. Acer macrophyllum, Pseudotsuga. One plant. Occasional in vicinity. Phenology: Vegetative. Origin: Introduced.
WTU 417615; Barcode: WTU-V-038096
Dominic Maze 321    15 Sep 2016
38. Betula pendula Roth
Database ID
3210032 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
417615 
Barcode
WTU-V-038096 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula pendula Roth.  
Type Notes
 
Collector
Dominic Maze 
Collection #
321 
Other Collectors
 
Date Collected
15 Sep 2016 
Verbatim Date
 
Country
U.S.A. 
State or Province
Oregon 
County
Multnomah 
Locality
Hoyt Arboretum. 
Elevation
 
Coordinates
45.5195° N, 122.7186° W 
Site Description
Partial, mixed canopy. Acer macrophyllum, Pseudotsuga. 
Specimen Notes
One plant. Occasional in vicinity. 
Phenology
Vegetative 
Origin
Introduced 
Cultivated?
No 
Imaged?
Yes 

Betulaceae
39. Betula pendula Roth
U.S.A., Washington, Pacific County:
Long Beach: Birch Street, about 1.3 km N of Cranberry Road.
Elev. 6 m. 46.40808° N, 124.03904° W. Datum: WGS 84. Coordinate uncertainty: 150 meters. Coordinate Source: Specimen Label.
Thickets of Gaultheria shallon and Vaccinium sp. at edge of lowland forest of cedar and spruce. Trees about 3 m tall, ca. 3-4 cm dbh, dark brown smooth bark with lenticels. Phenology: Vegetative. Origin: Introduced.
WTU 419069; Barcode: WTU-V-041625
Gordon C. Tucker 16299    9 Jul 2014
39. Betula pendula Roth
Database ID
3237757 
Herbarium
WTU 
Collection
Vascular Plants 
Dataset
 
Accession
419069 
Barcode
WTU-V-041625 
Other Numbers
 
Family
Betulaceae 
Name on Specimen
Betula pendula Roth 
Accepted Name
Betula pendula Roth 
Annotation History
1. Betula.
2. Betula pendula Roth.
    Annotated by P. F. Zika, 2018. Remarks: WTU 
Type Notes
 
Collector
Gordon C. Tucker 
Collection #
16299 
Other Collectors
 
Date Collected
9 Jul 2014 
Verbatim Date
 
Country
U.S.A. 
State or Province
Washington 
County
Pacific 
Locality
Long Beach: Birch Street, about 1.3 km N of Cranberry Road. 
Elevation
6 m. 
Coordinates
46.40808° N, 124.03904° W 
Site Description
Thickets of Gaultheria shallon and Vaccinium sp. at edge of lowland forest of cedar and spruce. 
Specimen Notes
Trees about 3 m tall, ca. 3-4 cm dbh, dark brown smooth bark with lenticels. 
Phenology
Vegetative 
Origin
Introduced 
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.