Plants acaulescent or subacaulescent; hairs white, in inflorescence also black, 0.5-1(-1.2) mm. Leaves 5-16 cm; stipules with longitudinal nerves, 6-10 mm, adnate to petiole for 2-4 mm, ciliate at margins or sometimes sparsely hairy; petiole 1.5-6 cm, like rachis sparsely to loosely subappressed to sometimes nearly spreading hairy, mostly hardening and persistent, sometimes somewhat pungent with age; leaflets in 7-15 pairs, narrowly elliptic, 4-12 × 1-4 mm, abaxially sparsely hairy, adaxially glabrous or more rarely sparsely hairy. Racemes subsessile, 1-4-flowered; bracts 5-8 mm. Calyx 12-15 mm, shortly appressed black or black and white or rarely only white hairy; teeth 3-5 mm. Petals yellow; standard narrowly obovate to obovate, 19-23 × 6-8 mm, apex emarginate; wings 17-22 mm; keel 15-18 mm. Legumes subsessile, 10-19 mm, 4-7 mm high and wide, with a straight to slightly curved beak up to 4 mm, incompletely to nearly fully 2-locular; valves subappressed hairy.
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