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

Utricularia vulgaris subsp. macrorhiza
greater bladderwort
Lentibulariaceae (Bladderwort family)

Introduction to Vascular Plants

© Brian Klinkenberg  Email the photographer   (Photo ID #29202)

E-Flora BC Static Map
Distribution of Utricularia vulgaris subsp. macrorhiza
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Species Information

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Perennial aquatic herb without roots; stems very slender, floating, submerged or creeping along the bottom, leafy, up to 1 m long and 1 mm or more thick.
Alternate, numerous, 1-5 cm long, pinnatifid, divided into 2 parts at the base and then again repeatedly but unequally into more than 20 flattened ultimate segments, the segments circular in cross-section, narrowed and pointed towards the tips, margins bristly; bladders numerous, borne on the leaves and 1-3 mm wide; winter buds egg-shaped or more elliptic, 1-2 cm long, with hyaline bristles.
Inflorescence of 6-20 flowers in lax racemes at the end of stalks 6-20 cm long; corollas yellow, the lower lips saddle-shaped,1-2 cm long with well-developed cylindric spurs, upper lips shorter than the lower lips;
Capsules, stalks down-curved.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Lakes and ponds in the lowland, steppe and montane zones; common S of 55degreeN in BC, less frequent northward; amphiberingian, N to AK, YT and NT, E to NF and S to MO, VA, TX, MX and CA; E Asia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Utricularia vulgaris ssp. macrorhiza

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




Elevation (metres) 20 892 1581
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
180 180 180
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 7 8
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BWBS(1), CDF(15), CWH(20), ICH(7), IDF(31), MS(4), PP(2), SBPS(12), SBS(5)

Synonyms and Alternate Names

Utricularia macrorhiza Leconte

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References