Oxalis tenuifolia Jacq.

Slender, caulescent, more or less pubescent, 6-24 cm high, often caespitose. Bulb from ovoid to globular, attenuate, often 2-3 cm long, with hard blackish-.brown tunics. Rhizome 1-10 cm long. Stem up to 20 cm long, pubescent, leafless towards the base, with numerous abortive or rarely short leafy branchlets above. Leaves, the cauline subsessile and tufted, appearing fasciculate, the upper often clustered at the apex of the stem or rarely verticillate: apical petioles very short, squamiform, or terete rarely cm long: leaflets 3, sessile, linear or narrowly linear-cuneate, conduplicate or involute, emarginate, 4-9 mm long, glabrous above, pubescent beneath, copiously callus-dotted at the apex and on the margins or more rarely ecallose. Peduncles 1-fld., rather numerous, axillary or terminal on the same or different plants, pubescent, 1-6 cm long, with 2 small alternate callus-tipped bracts on the upper part. Sepals lanceolate or linear-lanceolate, 4-8 mm long, pubescent, ciliate, sometimes purple-margined, often inconspicuously bicallose at the apex. Corolla 1.1-2.5 cm long, thinly pubescent, white with a funnel-shaped yellow tube: laminae of the petals obovate, slightly longer than the narrow claw, usually conspicuously purple-edged on the outer margin beneath. Filaments, the shorter 1.5-3 mm, the longer 3-5 mm long, minutely glandular-pilose, unequal, with rather acute teeth. Ovary minutely pilose on the upper half, ecallose, the chambers 1-2-ovuled: styles usually pubescent below, glandular-pilose above. Seeds without endosperm.