Herbs, annual, 1.5–4 dm, pubescent, hair appressed or ascending. Cotyledons decid­uous, petiolate. Stems ascend­ing or erect, branched. Leaves cau­line, crowded near base; petiole 2–6 cm; leaflets 5 or 6(or 7), blades 10–25 × 6–12 mm, adaxial surface glabrous. Peduncles 3–6 cm; bracts deciduous, 2–3 mm. Racemes 2–12 cm; flowers spirally arranged. Pedicels 4–6 mm. Flowers 10–13 mm; calyx 6–8 mm, abaxial lobe entire or cleft, 4–5 mm, adaxial lobe cleft, 2–3 mm, hairs silvery; corolla usually dark blue, rarely white, banner spot bright white, keel glabrous, wings flat. Legumes 2.5–3.5 cm, white silky-villous. Seeds 4 or 5. 2n = 36.

Phenology: Flowering spring–summer.
Habitat: Prairies, open fields, pas­tures, roadsides.
Elevation: 0–600 m.

Distribution

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Fla., La., Okla., Tex., Mexico (Coahuila, Nuevo Léon, Tamaulipas).

Discussion

Lupinus texensis is introduced in Florida in Alachua and Pinellas counties. In Texas, it is widespread in the southern two-thirds of the state.

Selected References

None.

Lower Taxa

None.