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

Lupinus sericeus Pursh
silky lupine
Fabaceae (Pea family)

Introduction to Vascular Plants

© Adolf Ceska  Email the photographer   (Photo ID #11086)

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Distribution of Lupinus sericeus
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Species Information

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General:
Perennial herb from a branching, woody stem-base; stems 1 to several, erect, 30-70 cm tall, sometimes branched above, silky-hairy throughout.
Leaves:
Basal and alternate along the stem, palmately compound; leaflets 5 to 9, oblanceolate, pointed or blunt at the tip, 3.5-6 cm long, covered with long silky hairs.
Flowers:
Inflorescence a stalked, terminal raceme, 10-20 cm long, of whorled pea-like flowers, the flower-stalks 3.5-6 mm long; corollas deep blue to lavender but sometimes pink or white, 11-13 mm long, the banner silky and with a white or yellow central patch on the back, the wings mostly glabrous, the keel fringed with hairs along the upper edges; calyces 2-lipped, the upper lip 2-toothed, the lower lip slightly longer, entire.
Fruits:
Pods, about 3 cm long, nearly 1 cm wide, densely silky-hairy; seeds 4 to 6, pinkish-brown.
Notes:
Recognition of infraspecific taxa within this highly variable species does not appear warranted at this time.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blue
Blooming Period:
Early Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Fall
Source:  The USDA

Habitat / Range

Dry sagebrush plains, bunchgrass slopes, cutbanks, and openings in thickets and forests in the steppe and lower montane zones; common in SC and SE BC; E to SW AB and S to NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Lupinus sericeus

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) 319 1195 2515
Slope Gradient (%) 0 32 360
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 195 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
901
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: AT(9), BAFA(1), BG(52), ESSF(187), ICH(83), IDF(327), IMA(2), MS(94), PP(107), SWB(1)

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

Lupinus sericeus var. kuschei (Eastw.) B. Boivin

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References