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Annual herb. Stems prostrate, much branched, up to 3.5 dm long, pilose. Leaves 3-foliolate, pilose; leaflets oblanceolate, rarely obovate, with the terminal one up to 2.5 cm long, but often much smaller; lateral leaflets similar but smaller; petiole shorter than the lateral leaflets. Stipule solitary, leafy, linear or ± oblong, up to 7 mm long but usually much smaller. Racemes 2-5-flowered, shortly pedunculate or almost sessile. Calyx with a membranous tube and herbaceous lobes, ± 5 mm long, pilose. Petals white or dull yellow, often marked with red or lilac, almost glabrous; standard up to 4 mm long; keel 3.5 mm long. Ovary pilose; ovules ± 18. Pod oblong in basal half, the apical half gradually narrowed to an acute apex, ± straight, ± 12 mm long, slightly inflated, densely pilose, strongly deflexed; seeds ± 18, ± 1 mm in diameter, on a funicle ± 1 mm long.
Leaflets 10–25(30) × 4–10 mm, elliptic-oblanceolate to oblanceolate, obtuse to rounded to the apiculate tip, pilose on both surfaces; stipules single at the node, 2–8 mm long, shortly stalked, linear-lanceolate.
Standard white or cream-coloured lined purple, a little shorter than the calyx and slightly longer than the other petals, shortly clawed, narrowly elliptic, with a few hairs along the midvein outside.
Annual; stem shortly erect, developing longer slender procumbent to prostrate branches from the base; branches 10–40 cm long, pilose.
Flowers 2–6, leaf-opposed in short racemes; bracts 1–2.5 mm long, filiform, usually slightly longer than the pedicel.
Calyx 5–6(7 in fruit) mm long, thinly pilose; upper lobes 3–4.5 mm long, triangular-lanceolate, slightly downcurved.
Pods 10–12 × 2.5–3 mm, narrow, tapered to the persistent forwardly directed style, ± densely pilose, 10–20-seeded.
Seeds 1.2–1.5 mm long, cream-coloured to brown, sometimes mottled, slightly sculptured.
Erect or decumbent, diffusely branched herb 6 in. high.
Small pink or mauve flowers
