Utricularia macrorhiza Leconte
greater bladderwort (common bladderwort)
Lentibulariaceae (Bladderwort family)

Introduction to Vascular Plants

Photograph

© Brian Klinkenberg     (Photo ID #29202)


Map

E-Flora BC Static Map

Distribution of Utricularia macrorhiza
Click here to view the full interactive map and legend

Species Information

General:
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.
Leaves:
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.
Flowers:
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;
Fruits:
Capsules, stalks down-curved.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Utricularia 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

Avg

Min

Max

Elevation (metres)
892 20 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]
7 4 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
98
Modal BEC Zone Class
IDF

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)

Habitat and 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.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Utricularia vulgaris L. p.p.
Utricularia vulgaris subsp. macrorhiza (Le Conte) Clausen
Utricularia vulgaris var. americana Gray