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

Lathyrus nevadensis var. nevadensis
purple peavine
Fabaceae (Pea family)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Lathyrus nevadensis var. nevadensis
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Species Information

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General:
Perennial herb from a creeping rhizome; stems erect to trailing, 15-100 cm tall/long, angled but not winged, soft-hairy.
Leaves:
Alternate, pinnately compound with 4 to 10 mostly paired leaflets; leaflets narrowly egg-shaped to lance-elliptic, 2-12 cm long, 0.2-3 cm wide; tendrils usually well developed and branched, at least some grasping; stipules 2-lobed, lanceolate to linear, less than 1/2 as long as the leaflets.
Flowers:
Inflorescence a loose, stalked, axillary cluster of 2 to 7 pea-like flowers; corollas usually bluish-purple or reddish-purple, fading to tan, 13-27 mm long, the banner darker than the wings or keel, about as long as the wings and 1-3 mm longer than the keel, the banner-claw shorter than the blade; calyces 6-12 mm long, somewhat hairy, the lanceolate teeth about 1/2 as long as the tube.
Fruits:
Pods, 3-7 cm long, 4-9 mm wide, glabrous; seeds 4 to 12.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry, open forests (deciduous, coniferous, and mixed), glades and meadows in the lowland and montane zones; common in C (between 52o and 56o N) and SW BC, locally frequent in SC and SE BC, absent on the Queen Charlotte Islands, N Vancouver Island and the adjacent coast; S to CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Lathyrus nevadensis var. nevadensis

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) 420 420 420
Slope Gradient (%) 23 23 23
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
240 239 240
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 3 3
Modal Nutrient Regime
Class
Number of field plots
 species was recorded in:
1
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: IDF(1)

Synonyms and Alternate Names

Lathyrus nevadensis (Peck) C.L. Hitchc.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References