Home
Leaves 3-foliolate; leaflets 3–8 × 1–3.5 mm, oblanceolate to obovate, puberulous to strigose beneath; petiole 1–5 mm long; stipules 0.5–1.5 mm long, subulate or linear-lanceolate.
Standard obovate to oblate, yellow, subglabrous to pubescent on the upper half outside; wings nearly as long as the keel; keel 5–11 mm long, angular, with a narrow twisted beak.
Perennial with a number of erect, slender, spiny stems from a taproot or small branched rootstock, 15–40 cm tall; branches strigulose to subappressed or crisped puberulous.
Flowers 1–2 on slender patent 0.5–1(1.5) cm long spines all along the branches; bracts 0.5–1 mm long, linear-lanceolate; bracteoles on the pedicel, small.
Calyx 3–4 mm long, appressed puberulous; lobes triangular, 1–2 times as long as the tube.
Pod subsessile, 4–7 mm across, subglobose, appressed puberulous, 2–4-seeded.
Seeds 2 mm long, oblique-cordiform, rugulose, brown.
