Lupinus brevicaulis |
Lupinus breweri |
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sand lupine, short stem blue lupine, short-stem lupine |
Brewer's lupine, Matted lupine |
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Habit | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. | Herbs or subshrubs, perennial, to 2 dm, matted or tufted, silvery-silky. | ||||||||
Stems | very short, tufted, branched. |
prostrate, branched, base ± woody. |
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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, clustered near base; stipules 2–5 mm; petiole 1–5(–6) cm; leaflets 5–10, blades 3–20 × 2–6 mm, adaxial surface pubescent. |
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Racemes | dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
dense, 1–10 cm; flowers whorled. |
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Peduncles | 1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
1–3(–8) cm; bracts deciduous, 3–5 mm. |
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Pedicels | 0.3–1.5 mm. |
1–3(–4) mm. |
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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. |
4–11 mm; calyx bulge or spur 0–1 mm, abaxial lobe entire or 3-toothed, 4–6 mm, adaxial lobe 2-toothed, 4–7 mm; corolla blue to violet, banner patch white or yellow, banner glabrous or densely hairy abaxially, keel straight, abaxial margins glabrous, adaxial margin glabrous or ciliate. |
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Legumes | not undulate, 1 cm, thinly pilose to coarsely hirsute. |
1–2 cm, silky. |
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Cotyledons | persistent, disclike, sessile. |
deciduous, petiolate. |
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Seeds | 1 or 2, smooth. |
3 or 4, mottled tan, brown, 3–4 mm. |
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Lupinus brevicaulis |
Lupinus breweri |
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Phenology | Flowering spring. | |||||||||
Habitat | Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite. | |||||||||
Elevation | 300–2400 m. (1000–7900 ft.) | |||||||||
Distribution |
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
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w United States
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Discussion | Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus | Fabaceae > subfam. Faboideae > Lupinus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871) | A. Gray: Proc. Amer. Acad. Arts 7: 334. (1868) | ||||||||
Web links |