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

Oxytropis maydelliana Trautv.
Maydell's locoweed (Maydell's oxytrope)
Fabaceae (Pea family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #23896)

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Distribution of Oxytropis maydelliana
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Species Information

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General:
Perennial herb from a branching stem-base densely covered with old, brownish leaf-stalks and stipules; tufted, to 15 cm tall.
Leaves:
Basal, odd-pinnately compound, 3-14 cm long; leaflets 9 to 21, egg-shaped to lance-oblong, 3-15 mm long, sparsely soft-hairy; stipules 12-20 mm long, long-tailed at the tip, becoming brown with age, fused and joined to the leaf-stalk below, the free margins fringed with long hairs.
Flowers:
Inflorescence a somewhat head-like raceme of 5 to 12 pea-like flowers, the racemes 1-4 cm long on erect to ascending stalks 4-15 cm long; corollas yellow to whitish, 13-17 mm long; calyces short-cylindric, woolly with dark and light hairs, the tube 5-6 mm long, the teeth 1.5-3 mm long.
Fruits:
Pods, egg-shaped to ellipsoid, abruptly beaked, 1.5-2.5 cm long, soft-hairy, incompletely 2-chambered.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows, turfy tundra, rocky ridges and slopes in the montane to alpine zones; rare in N BC; amphiberingian, N to AK, YT and NT and E to N PQ; E Asia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Oxytropis maydelliana

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) 1505 1615 1700
Slope Gradient (%) 2 23 49
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 291 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 3
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
5
Modal BEC Zone Class
BAFA
All BEC Zones (# of stations/zone) species was recorded in: BAFA(3), SWB(2)

Climate

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

Oxytropis campestris subsp. melanocephala Hook.
Oxytropis campestris var. glabrata Hook.
Oxytropis glabrata (Hook.) A. Nels.
Oxytropis maydelliana subsp. melanocephala (Hook.) Porsild

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References