E-Flora BC: Electronic Atlas of the Flora of British Columbia

Betula pubescens Ehrh. subsp. pubescens
downy birch (European white birch; silver birch)
Betulaceae (Birch family)

Introduction to Vascular Plants
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Distribution of Betula pubescens subsp. pubescens
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Species Information

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General:
Deciduous tree, 10-30 m tall; bark white or brown, often peeling; twigs short-hairy, not glandular.
Leaves:
Alternate, deciduous, rounded in outline, hairy below, rarely glandular, 1-5 cm long.
Flowers:
Male and female flowers in separate catkins, the male 3-6 cm long, the female 1-4 cm long; flowers emerging before or with the leaves; catkins breaking up at maturity.
Fruits:
Nutlets with broad wings, at least 1-1 1/2 times as wide as the body of the nutlets; bracts with rounded lateral lobes.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs in the lowland zone; rare in SW BC, known from the lower Fraser Valley and extreme SE Vancouver Island; introduced from Europe.

Source: The Illustrated Flora of British Columbia

Taxonomic and Nomenclatural Links

Flora North America treatment for Betulaceae
 Flora North America treatment for Betula pubescens
Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-07-27 9:31:44 AM ]
Disclaimer: The information contained in the E-Flora atlas pages is derived from expert sources as cited in each section. This information is scientifically based. E-Flora also acts as a portal to other sites via deep links. As always, users should refer to the original sources for complete information. E-Flora BC is not responsible for the accuracy or completeness of the original information.
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