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Leaves 3-foliolate; leaflets 8–25 × 2.5–8 mm, mostly narrowly elliptic-oblanceolate, lower ones more obovate, pointed to rounded to a slightly mucronate tip, strigose-pubescent on both surfaces; petioles shorter than the leaflets; stipules single at a node, resembling a small leaflet.
Annual or short-lived perennial, with a short stem, soon developing numerous slender radiating prostrate to ascending branches from the top of an undivided taproot; branches up to 10–50 cm long, densely silvery strigose-pubescent with slightly biramous hairs.
Flowers 1–2, leaf-opposed, with a short rhachis when paired; peduncle 8–20 mm long, filiform; bracts 1–2 mm long, linear; pedicel 3–3.5 mm long; bracteoles absent.
Calyx 4–5 mm long, densely strigulose-pubescent; upper and lateral lobes joined to ± same level, 2.4–3 mm long, narrowly and acuminately triangular.
Pods 10–12 × 3–3.5 mm, narrowly oblong, a little tapered to the apex, strigulose-pubescent, 16–20-seeded.
Seeds c. 2 mm across, rounded, only slightly oblique-cordiform, matt, brown.
