Lupinus flavoculatus

Herbs, annual, 0.5–2 dm, pubescent, hairs more than 1 mm. Cotyledons persistent, disclike, sessile. Stems short, erect or spreading, branched or unbranched. Leaves cauline, crowded near base; stipules well developed; petiole 2–8 cm; leaflets 7–9, blades 10–20 × 5–8 mm, adaxial surface glabrous. Peduncles 3–5(–10 in fruit) cm; bracts persistent, straight, 2–3 mm. Racemes elongate, dense, several–many-flowered, 2–12 cm, usually exceeding leaves; flowers spirally arranged. Pedicels 1–3 mm. Flowers 7–10 mm; calyx abaxial lobe shallowly cleft, 4–5 mm, adaxial lobe deeply cleft, 1–3 mm, less than 1/2 as long as abaxial; corolla bright blue, banner spot yellow, keel blunt, glabrous. Legumes not obviously undulate, ovoid, often secund, 0.5–1 cm, adaxial margin not constricted between seeds, thinly pilose to coarsely hirsute. Seeds 2–4, ridged.

Phenology: Flowering spring.
Habitat: Sandy or gravelly desert areas.
Elevation: 600–2300 m.

Ariz., Calif., Nev., Utah.

Discussion

Lupinus flavoculatus is known from the Inyo and White mountains region of California, southern Nevada, Washington County, Utah, and Mohave County, Arizona. It resembles a hairy form of L. odoratus.

Selected References

None.

Lower Taxa