Lupinus brevicaulis |
Lupinus westianus |
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sand lupine, short stem blue lupine, short-stem lupine |
Gulf Coast lupine |
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Habit | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. | Herbs, biennial or perennial, 3–5 dm, hairs short-appressed, velvety to shaggy. | ||||
Stems | very short, tufted, branched. |
spreading-ascending, clustered, robust, branched or unbranched. |
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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; stipules abortive or early deciduous (occurring only on very new growth), 9–15 mm; petiole 2–3.5 cm; leaflet 1, blades 30–70 × 15–25 mm, surfaces short-appressed, velvety to satiny sericeous. |
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Racemes | dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
4–25 cm; flowers whorled. |
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Peduncles | 1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
2.5–6.5 cm; bracts deciduous, 4–7 mm. |
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Pedicels | 0.3–1.5 mm. |
4–6 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. |
11–14 mm; calyx abaxial lobe ovate, 2-lobed, 8–12 mm, adaxial lobe lanceolate, entire or obscurely 3-lobed, 5–10 mm; corolla pink or rose to blue, banner spot maroon to dark blue, banner glabrous abaxially, keel glabrous. |
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Legumes | not undulate, 1 cm, thinly pilose to coarsely hirsute. |
1.5–2.5 cm, villous. |
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Cotyledons | persistent, disclike, sessile. |
deciduous, petiolate. |
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Seeds | 1 or 2, smooth. |
2–4. |
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Lupinus brevicaulis |
Lupinus westianus |
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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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Florida |
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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 2 (2 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) | Small: Torreya 26: 91. (1926) | ||||
Web links |