Variable procumbent to erect perennial herbs, 1–10 dm. long with white to fulvous appressed to spreading pilosity on stems, branches and petioles. Leaves 1–3-foliolate; stipules conspicuous and persistent, deltoid-attenuate, slightly auricled at base, 3.5–10 mm. long, 0.5–3 mm. wide, striate and ciliate, somewhat pilose to glabrescent on outer surface; petioles 0.8–2.2 cm. long; rhachis 0.2–0.7 cm. long; leaflets almost orbicular to oval, elliptic-obtuse or obovate, usually mucronate, often retuse, glabrous or sparsely to moderately appressed pilose on the upper surface, moderately to densely so and with venation elevated on the lower surface, terminal leaflets 1.4–5 cm. long, 0.5–2 cm. wide, lateral leaflets, when present, 1–3.8 cm. long, 0.4–1.3 cm. wide. Inflorescence of axillary and terminal short, congested, capitate to ± spicate racemes, the rhachides uncinulate-puberulent and sometimes also sparsely to abundantly pilose, somewhat obscured by the long pubescence of bracts and calyces; bracts rather long persistent, the primary ovate-acuminate, 2.6–7 mm. long, 1.5–2 mm. wide, striate, pilose to glabrescent on outer surface, ciliate, each subtending 2 pedicels; secondary bracts when (rarely) present usually depauperate; pedicels uncinulate-pilosulous, becoming arcuately reflexed, 3.5–9 mm. long. Flowers red to pink, purple or blue, or any of these tinged with white. Calyx subequally 5-lobed, silky pilose, the lobes ciliate, 4–6 mm. long. Standard obovate, somewhat clawed, 4–5 mm. long, 2–3.7 mm. wide; wings ± oblong, obtuse, shortly clawed, 3–4 mm. long, 1–1.5 mm. wide; keel-petals ± scythe-shaped, truncate at apex, long-clawed, 3–4.5 mm. long, 0.8–1 mm. wide at apex. Fruit 1–6-articled, sessile to short-stipitate, essentially straight or slightly concave along the upper suture, somewhat curved between the isthmi below; articles partially separating, then dehiscing along the lower suture, uncinulate-pubescent (and occasionally horizontally pilose) on the surfaces, 2–3.5 mm. long, 2–2.5 mm. wide. Seed purplish, reddish, tawny or greenish tawny, quadrate to quadrate-reniform, 1.5–2 mm. long, 1–1.5 mm. wide.
