Lupinus hirsutissimus
Trans. Hort. Soc. London, ser. 2, 1: 411. 1835.
Herbs, annual, 2–10 dm, with short, appressed, stiff, pustulate, stinging hairs to 3.5 mm. Cotyledons deciduous, petiolate. Stems ascending or erect, branched or unbranched. Leaves cauline; petiole 4–9 cm; leaflets 5–8, blades 20–50 × 10–20 mm, adaxial surface hirsute. Peduncles 5–8 cm; bracts usually persistent, 4–5 mm. Racemes 15–40 cm; flowers spirally arranged. Pedicels 2–5 mm. Flowers 12–18 mm; calyx 6–10 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft; corolla deep pink to magenta, drying purplish, banner spot white becoming magenta, lower keel margins densely ciliate from middle to near claw. Legumes 2–4 cm, coarsely hairy. Seeds 3–6.
Phenology: Flowering spring.
Habitat: Dry, rocky areas, burns.
Elevation: 0–1400 m.
Distribution
Calif., Mexico (Baja California).
Discussion
Lupinus hirsutissimus occurs in the central and southern coast regions into the adjacent mountains and Channel Islands.
Plants are often greater than one meter in height after fires.
Selected References
None.