Lupinus lyallii A. Gray
dwarf mountain lupine
Fabaceae (Pea family)

Introduction to Vascular Plants


© Ward Strong     (Photo ID #25218)


E-Flora BC Static Map

Distribution of Lupinus lyallii
Click here to view the full interactive map and legend

Species Information

Low perennial herb from a sometimes branched stem-base; stems poorly developed, tufted or mat-forming, less than 10 cm long/tall, finely grey-hairy with short, appressed hairs.
Mostly basal on stalks 4-10 cm long, palmately compound; leaflets 5 to 7, oval to narrowly egg-shaped, 6-15 mm long, 3-5 mm wide, silky on both surfaces.
Inflorescence a dense, terminal raceme, 1-4 cm long, of pea-like flowers; corollas bluish, 7-9 mm long, the banner often darker-blue, oblong-elliptic to narrowly egg-shaped, glabrous and with a white central patch, the wings glabrous, the keel sparsely to densely fringed along the upper edges; calyces 2-lobed, the upper lip 2-toothed, the lower one entire.
Pods, 12-15 mm long, 5 mm wide, silky-hairy; seeds 1 to 4.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Lupinus lyallii

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




Elevation (metres)
2009 1630 2265
Slope Gradient (%)
25 0 80

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

201 3 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 0 6
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

AT(7), BAFA(1), ESSF(39), IMA(1)

Habitat and Range

Mesic to dry meadows and open, gravelly ridges and slopes in the subalpine and alpine zones; infrequent in the Coast-Cascade Mountains S of 53oN; S to ID, NV and N CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Lupinus lepidus subsp. lyallii
Lupinus lepidus var. lobbii