Lupinus pusillus |
Lupinus sericatus |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
intermountain lupine, low lupine, rusty lupine |
Cobb Mountain lupine |
|||||||||
Habit | Herbs, annual, 0.5–2 dm, sparsely pubescent to pilose, hairs more than 1 mm. | Herbs, perennial, 1.5–5 dm, silver to gray-green, short-appressed-hairy. | ||||||||
Stems | short and tufted or erect, branched from base or near middle. |
erect, ascending, or decumbent, branched. |
||||||||
Leaves | cauline, often crowded near base; stipules well developed; petiole 1–9 cm; leaflets 5–9, blades 10–40 × 5–10 mm, adaxial surface glabrous. |
cauline, clustered near base; stipules 2–7 mm; petiole 5–15 cm; leaflets 4–7, blades widely spoon-shaped, 30–40(–50) × 10–20 mm, surfaces densely silky. |
||||||||
Racemes | 8–12-flowered, 2–11 cm, shorter than or slightly exceeding foliage; flowers spirally arranged. |
open to dense, 10–30 cm; flowers ± whorled. |
||||||||
Peduncles | 0–3.5 cm; bracts persistent, straight, 2–5 mm. |
8–15 cm; bracts deciduous, 3–4 mm. |
||||||||
Pedicels | 1–3.5 mm. |
4–6 mm. |
||||||||
Flowers | 5–12 mm; calyx abaxial lobe entire, 5–6 mm, adaxial lobe cleft, 2.5–4 mm; corolla vivid blue, sometimes paler or white, sometimes bicolored, banner spot white or yellowish, keel glabrous. |
12–16 mm; calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 7–10 mm, adaxial lobe 2-toothed, 6–10 mm; corolla purple to violet, banner ± hairy abaxially, lower keel margins usually ± glabrous, adaxial margin ciliate claw to tip. |
||||||||
Legumes | 1.5 cm, constricted between seeds, thinly pilose to coarsely hirsute. |
2–3 cm, hairy. |
||||||||
Cotyledons | persistent, disclike, sessile. |
deciduous, petiolate. |
||||||||
Seeds | 2, wrinkled or ridged. |
3–7, light brown, 3–5 mm. |
||||||||
Lupinus pusillus |
Lupinus sericatus |
|||||||||
Phenology | Flowering Mar–Jun. | |||||||||
Habitat | Open wooded slopes. | |||||||||
Elevation | 200–1600 m. (700–5200 ft.) | |||||||||
Distribution |
w North America; c North America
|
CA |
||||||||
Discussion | Varieties 3 (3 in the flora). Lupinus pusillus is a highly variable species, with the varieties intergrading. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus sericatus is known from the southern Inner North Coast Ranges in Colusa, Lake, Napa, and Sonoma counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | ||||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Pursh: Fl. Amer. Sept. 2: 468. 1814[1813] | Kellogg: Proc. Calif. Acad. Sci. 7: 92. (1877) | ||||||||
Web links |