Erect, caulescent; silky-caneseent, 10-20 cm high. Bulb ovoid, attenuate at the apex or subfusiform, 1-2.5 cm long; tunics hard, smooth, blackish. Rhizome slender, up to 10 cm long. Stem 1-12 cm long, with a few scales and often with1-2 subsessile leaves. Leaves terminally congested, darkish green, with short petioles; leaflets 3, sessile, linear or linear-cuneate, conduplicate-falcate, slightly emarginate, usually 0.6-1 cm long, silky-canescent above and beneath, bicallose at the apex, often with a row of calli towards the margins. Peduncles 1-fld., 2-6 cm long, usually apical, sometimes 1-2 longer, arising from the cauline scales, with 2 minute alternate bracts near the calyx. Sepals linear-cuneate, somewhat attenuate, 4-6 mm long, with 2 apical calli. Corolla 1.5-2.5 cm long, pubescent, white or rarely violaceous, with a funnel-shaped yellow tube; laminae of the petals obliquely obovate, reddish-purple or purple-streaked along the outer margin beneath, rather longer than the claw. Filaments, the shorter 2-3.5 mm, the longer 3-5 mm long, sparsely glandular-pilose, with acute teeth 0.6-0.9 mm long. Ovary pubescent on the upper half, the chambers 2-3-ovuled; styles pubescent below, glandular-pubescent above. Seeds without endosperm. Rarely with double flowers.
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Grey-silky, caulescent geophyte to 20 cm. Leaves terminal, trifoliolate, leaflets linear-cuneate, conduplicate, falcate, silky. Flowers white or lilac with yellow cup and darker veins beneath.