Lupinus brevicaulis |
Lupinus tidestromii |
|
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sand lupine, short stem blue lupine, short-stem lupine |
clover lupine, Tidestrom's lupine |
|
Habit | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. | Herbs, perennial, 1–3 dm, white-shaggy-hairy; sometimes weakly rhizomatous. |
Stems | very short, tufted, branched. |
± prostrate, branched, weak. |
Leaves | cauline, crowded near base; stipules well developed; petiole 1–6 cm; leaflets (3 or)5–9, blades 8–20 × 2–9 mm, adaxial surface glabrous. |
cauline; stipules 8–12 mm; petiole 1–3 cm; leaflets 3–5, blades 5–20 × 2–5 mm, adaxial surface sericeous. |
Racemes | dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
open, 2–10 cm; flowers whorled. |
Peduncles | 1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
4–8 cm; bracts deciduous, 4–5 mm. |
Pedicels | 0.3–1.5 mm. |
3–5 mm. |
Flowers | 6–8 mm; calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial; corolla bright blue, banner spot white or yellow, keel glabrous. |
11–13 mm; calyx 5–6 mm, bulge or spur 0–1 mm, abaxial lobe entire or notched, adaxial lobe deeply notched; corolla light blue to lavender, banner patch white to yellow turning violet, banner glabrous abaxially, lower keel margins glabrous, adaxial margin ciliate claw to tip. |
Legumes | not undulate, 1 cm, thinly pilose to coarsely hirsute. |
2–3 cm, shaggy. |
Cotyledons | persistent, disclike, sessile. |
deciduous, petiolate. |
Seeds | 1 or 2, smooth. |
5–8, tan, mottled brown, 3–4 mm. |
Lupinus brevicaulis |
Lupinus tidestromii |
|
Phenology | Flowering spring. | Flowering Apr–Jun. |
Habitat | Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite. | Dunes, beaches. |
Elevation | 300–2400 m. (1000–7900 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
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CA
|
Discussion | Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus tidestromii is known from coastal areas of Marin, Monterey, and Sonoma counties. Shaggier plants from the northern North Coast geographic region of California have been called var. layneae, commonly known as the Point Reyes lupine. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus | Fabaceae > subfam. Faboideae > Lupinus |
Sibling taxa | ||
Synonyms | L. layneae, L. littoralis var. layneae, L. tidestromii var. layneae | |
Name authority | S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871) | Greene: Erythea 3: 17. (1895) |
Web links |