Oxalis recticaulis Sond.

Erect, 7-17 cm high, more or less clothed with both short, simple and gland-tipped hairs, caulescent or at least with an exserted stem. Bulb oval or ovoid, smooth, more or less attenuate at the base and apex, 2 cm long: tunics brown or blackish-brown, sometimes slightly gummy. Rhizome rather slender, often producing lateral underground stolons on the upper part. Stem rather rigid, up to 14 cm long, often branching, more or less leafy, rarely naked. Leaves both cauline and terminally clustered, the upper petioles up to 3 cm long, usually longer than the cauline: leaflets 3, sessile, linear-cuneate, emarginate, or rarely narrowly cuneate-obovate, 0.5-1.7 cm long, glabrous above, usually sparsely pubescent beneath, ciliate with gland-tipped hairs on the margins and midrib, conspicuously bicallose at the apex and sometimes with a row of irregular calli around the margins, very rarely ecallose. Peduncles fld., terminal or axillary in the upper leaf axils, usually 2-8 cm long, with 2 alternate subulate callose bracts near the calyx. Sepals lanceolate, ovate-lanceolate or oblong, acute or obtuse, 4-6 mm long, with2 conspicuous short apical calli, very rarely ecallose. Corolla 1.5-2.5 cm long, white or very pale violet-rose, with a moderately wide sparsely glandular funnel-shaped yellow tube: laminae of the petals obovate, sometimes a deeper rose on the outer margin beneath, a little longer than the claw. Filaments, the shorter 2-4 mm, the longer 3-7 mm long, with rather long, acute teeth. Ovary pubescent on the upper half, the chambers 3-ovuled: styles pubescent below, glandular-pilose above. Seeds without endosperm.