Herbs, perennial, to 0.7 m. Leaves slightly sclerophyllous, 2–10 cm, hairy; stipules per­sistent, to 1 mm wide; extra­floral nectaries between all leaflet pairs, stipitate; leaflet pairs 2–4, blades obovate to elliptic-obovate or oblong-elliptic, 10–38 × 5–19 mm. Racemes (2–)4–8-flowered; bracts caducous. Pedicels 8–17 mm. Flowers monosymmetric; calyx pale green, pinkish, or yellowish; corolla golden yellow, longest petal 9–15 mm; androecium not heterantherous, stamens 7, staminodes 3; anthers 2.5–4.2 mm, dehiscing by 1 apical pore, apical appendage 0; gynoecium linear, slightly incurved, ovules 28–42; ovary hairy; style filiform, incurved. Legumes erect, cylindrical, slightly curved, 180–350 × 50–80 mm, shallowly corrugated over seeds, dehiscing apically downward. Seeds brown, rhomboid.

Phenology: Flowering late winter–early fall.
Habitat: Sandy and gravelly desert washes, slopes, and stony hills, disturbed desert roadsides.
Elevation: 0–1200 m.

Distribution

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Ariz., Calif., Nev., N.Mex., Mexico (Baja California, Sinaloa, Sonora).

Discussion

Selected References

None.

Lower Taxa

None.