Oxalis petraea T.M.Salter

Small, stemless, 3-5 cm high, densely clothed with very short capitate hairs. Bulbs narrow-ovoid, up to 1 cm long, loosely enclosed within the tunics: tunics very numerous, lanceolate, subulate or linear, often 2 cm long, dark brown, sharply acute and often deflexed at the apex, splitting into3 segments below, often undulate. Rhizome about 6 cm long, with rather large scales. Leaves usually 2-6: petioles 0.5-1.5 cm long, widened below the basal articulation: leaflets 3, sessile, densely glandular-pilose, glandular-ciliate, glaucous above, with numerous brown calli beneath, particularly near the margin, the medial broadly obcordate, broadly cuneate at the base, not deeply incised, 4-7 mm long, 6-10 mm broad, the lateral rather smaller, obliquely rotund. Peduncles 1-fld., up to 2-5 cm long, like the petioles conspicuously articulate at the base, with 2 small alternate bracts at the apex or a little below the calyx. Sepals narrow-obovate, about 4 mm long, ciliate, sometimes purplish at the margins, often with 4 red apical calli. Corolla 1.6-2.
 long, dense y glandular-pilose, dull pink or white, with a funnel-shaped yellow tube: laminae of the petals obovate, obliquely truncate, about as long as the tapering narrow-cuneate claw. Filaments, the shorter 2.5-3.5 mm, the longer 4-6 mm long, sparsely glandular-pilose, shortly and obtusely toothed, the longest shortly rostrate at the apex. Ovary glandular-pilose, ecallose, the chambers 3-ovuled: styles densely and shortly glandular-pilose.