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

Physaria douglasii (S.Watson) O'Kane & Al-Shehbaz, 2002 subsp. douglasii
Columbia bladderpod
Brassicaceae (Mustard family)

Introduction to Vascular Plants
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Distribution of Physaria douglasii subsp. douglasii
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Species Information

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General:
Perennial from a taproot and a simple stem-base; stems several, erect, rarely branched, (10) 20-40 (50) cm tall, densely hairy.
Leaves:
Basal leaves suborbicular to elliptic, stalked, entire to remotely toothed, 3-12 cm long, 2-15 mm wide, hairy; stem leaves many, usually linear to linear-oblanceolate, entire to sinuate or remotely toothed, 1-4.5 cm long, hairy.
Flowers:
Flower stalks erect and nearly straight to S-shaped or slightly recurved, 6-17 mm long; petals yellow to yellowish-orange, 6-9 mm long.
Fruits:
Silicles, very short-stalked, inflated, egg-shaped to nearly globose, 3-4 mm long and as wide, sparsely hairy or glabrous; beaks about equalling the silicle in length; seeds flattened, not winged.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands, shrublands, meadows and rocky slopes in the steppe to alpine zones; infrequent in extreme SC and SE BC; S to ID and N OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Physaria douglasii ssp. douglasii

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
Site Information
 Value / Class

Minimum

Average

Maximum
Elevation (metres) 319 797 1230
Slope Gradient (%) 0 28 90
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W] 		50 204 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		1 2 5
Modal Nutrient Regime
Class		 C
Number of field plots
 species was recorded in:		 81
Modal BEC Zone Class
 PP
All BEC Zones (# of stations/zone) species was recorded in: BG(13), IDF(31), PP(36)

Synonyms and Alternate Names

Physaria douglasii Douglas

Taxonomic and Nomenclatural Links

Flora North America treatment for Brassicaceae
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: 2026-02-16 9:26:07 PM ]
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