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

Utricularia gibba L.
humped bladderwort
Lentibulariaceae (Bladderwort family)

Introduction to Vascular Plants

© Ben Keen  Email the photographer   (Photo ID #84192)

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Distribution of Utricularia gibba
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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, up to 25 cm long.
Stem leaves alternate, numerous, 0.3-1 cm long, threadlike, either undivided or with 1-2 segments, the margins glabrous; valve-lidded bladders 1-2, borne on the leaves, 1-2 mm wide, these trap small, aquatic animals; winter buds lacking.
Inflorescence of 1-3 flowers in lax racemes at the end of stalks; corollas yellow, the spurs broadly cone-shaped but shorter than the lower lips, the lower lips broad, flat, saddle shaped; bracts without ear-like lobes.
Capsules, stalks erect; seeds winged.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Lakes and lake edges, and muddy disturbed sites in the lowland zone; infrequent on S Vancouver Island and the Vancouver area; S to most of eastern N America; S America and Africa.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Utricularia gibba

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) 356 700 1045
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 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: CDF(3), CWH(4), ICH(1), IDF(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Utricularia biflora Lam.
Utricularia fibrosa Walter
Utricularia obtusa Sw.
Utricularia pumila Walter

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References