Lupinus truncatus |
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blunt-leaf lupine, collared annual lupine |
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Habit | Herbs, annual, 2–5(–8) dm, finely pubescent, appearing glabrous. |
Stems | ascending or erect, branched or unbranched. |
Leaves | cauline; petiole flattened and leafletlike, 3–10 cm; leaflets 5–8, blades 20–40 × 2–5 mm, apex usually truncate, adaxial surface glabrous. |
Racemes | 6–35 cm; flowers loosely spirally arranged. |
Peduncles | 3–10 cm; bracts persistent, 2–5 mm. |
Pedicels | 2–4 mm. |
Flowers | 8–13 mm; calyx 3–4 mm, lobes ± equal, abaxial lobe entire or shallowly cleft, 2.5–3 mm, adaxial lobe deeply cleft, 1.5–2 mm; corolla banner and wings magenta, banner spot white or yellowish, becoming dark magenta, keel stout, blunt, lower and upper margins ciliate from claw to middle. |
Legumes | ±3 cm, pubescent. |
Cotyledons | deciduous, petiolate. |
Seeds | 6–8. |
Lupinus truncatus |
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Phenology | Flowering spring (Mar–May). |
Habitat | Openings in coastal sage scrub, chaparral, oak woodlands, burned areas. |
Elevation | 0–1200 m. (0–3900 ft.) |
Distribution |
CA; Mexico (Baja California)
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Discussion | Lupinus truncatus is known in the flora area from San Cruz County southward in the Central and South Coast regions; the South Coast, Transverse, and Peninsular ranges; and the Channel Islands. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus |
Sibling taxa | |
Name authority | Nuttall ex Hooker & Arnott: Bot. Beechey Voy., 336. (1838) |
Web links |