Herbs, annual, 1–2 dm, pubescent. Cotyledons decid­uous, petiolate. Stems decum­bent, branched. Leaves cauline; petiole 2–3 cm; leaflets 5–7, blades 10–15 × 5–6 mm, adaxial surface pubescent. Peduncles: primary peduncles and lateral branches decumbent, 2–3.5 cm; bracts usually persistent, 3–3.5 mm. Racemes dense, 3–9 cm; flowers spirally arranged, axillary flowers absent. Pedicels 1–1.5 mm. Flowers 6–7 mm; calyx 4–5.5 mm, lobes ± equal, adaxial lobe deeply cleft; corolla pink, banner spot white or yellowish, keel glabrous. Legumes 1.5–2 cm, pubescent or glabrate. Seeds 3 or 4.

Phenology: Flowering winter–spring.
Habitat: Stabilized sand dunes.
Elevation: 0–30 m.

Distribution

• Generated Map
• Legacy Map

Calif.

Discussion

Lupinus nipomensis is known only from the Guadalupe-Nipomo Dunes of southwestern San Luis Obispo County in the Central Coast, where it intergrades with L. concinnus.

Lupinus nipomensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.