Perennial herbs, 20-30 cm tall. Stems branched from woody articulate base; leaves at base 4-9 verticillate and connate into sheath, densely tawny villous. Leaflets oblong-lanceolate, 2-3 × 0.4-0.8 cm, lateral leaflets unequal, tawny villous abaxially, especially on margins, glabrous adaxially, base tapering to narrowly winged petiole, apex acute. Racemes lax, 8-10 cm; flowers in 2 or 3 whorls; bracts lanceolate, 1.2-2 cm, 3-6 connate from base. Calyx 1.5-1.7 cm. Corolla yellow, 2.6-2.8 cm, never becoming blue; keel obviously longer than standard. Ovary with 5-6 mm stipe; ovules 4 or 5. Mature legume not seen. Fl. Jun.
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