Trifolium suffocatum

Prostrate or procumbent annual herb; stems to c. 10 cm long, sometimes almost absent, glabrous or sparsely hairy. Leaves palmately trifoliolate, long-petiolate; leaflets obovate-cuneate, 3–12 mm long, 2–10 mm wide, glabrous, finely toothed, apex notched; stipules largely obscuring inflorescence, scarious or membranous. Inflorescences mostly 1–15-flowered, close to one another, axillary, umbellate, 3–7 mm long, 5–8 mm wide, sessile; flowers sessile to subsessile. Calyx 3–5 mm long, sparsely pilose or glabrous, tube cylindric, 10-veined, throat open, teeth subequal, shorter than or as long as tube, blunt, recurved in fruit; corolla 3–4 mm long, white, persistent; standard obovate. Pod ovoid, 3–5 mm long, included in calyx tube; seeds 2, lenticular to reniform, c. 0.8 mm long, yellowish, obscurely tuberculate. Flowers mainly Oct.–Dec.