Lupinus sulphureus Douglas ex Hook.
sulphur lupine
Fabaceae (Pea family)
Introduction to Vascular Plants
sulphur lupine
Fabaceae (Pea family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from a branched stem-base; stems erect, 40-80 cm tall, slender, mostly unbranched, appressed silky-hairy to short-stiff-hairy.
Leaves:
Basal and alternate along the stem, palmately compound; leaflets 8 to 13, narrowly oblanceolate, pointed at the tip, hairy on both surfaces, 2-5 cm long, on stalks equal to the leaflets except the lowermost, which are 3-5 times as long as the blades.
Flowers:
Inflorescence a terminal raceme of numerous, whorled or somewhat scattered, pea-like flowers, the racemes 12-20 cm long, 2-4 times as long as the stalks; corollas yellow, the banner glabrous or sparsely long-hairy on the back, the wings glabrous, the keel fringed with hairs along the upper edges; calyces 2-lipped, not spurred, upper lip 2-toothed, the lower lip entire.
Fruits:
Pods, 2-3 cm long, densely silky-hairy; seeds 4 to 5, pinkish-brown.
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.
Illustration Source: The Illustrated Flora of British Columbia
USDA Species Characteristics
Flower Colour:
Yellow
Blooming Period:
Early Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Fall
Source: The USDA
Ecology
Ecological Framework for Lupinus sulphureus
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)
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) |
1120 | 570 | 1720 |
| Slope
Gradient (%) |
26 | 8 | 43 |
|
Aspect (degrees) |
209 | 90 | 300 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
2 | 1 | 5 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
27 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BG(3), ESSF(3), IDF(1), MS(1), PP(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry sagebrush flats and forest openings in the steppe and lower montane zones; infrequent in SC and SE BC; S to E WA and E OR.Status Information
Synonyms
Synonyms and Alternate Names:
Lupinus sulphureus subsp. kincaidii (C.P. Sm.) L. Phillips
Lupinus sulphureus subsp. subsaccatus (Suksd.) L. Phillips
Lupinus sulphureus subsp. sulphureus
Lupinus sulphureus var. applegateanus C.P. Sm.
Lupinus sulphureus var. echleranus C.P. Sm.
Lupinus sulphureus var. kincaidii (C.P. Sm.) C.L. Hitchc.
Lupinus sulphureus var. subsaccatus (Suksd.) C.L. Hitchc.