Oxalis glabra Thunb.

Caulescent, rather slender, 5-20 cm high, minutely pubescent or more rarely glabrous. Bulb small, ovoid, acute or rarely with a slender apical beak, usually 5-9 mm long, with smooth dark brown tunics. Rhizome short, producing terminal bulbils on long lateral underground stolons or runners. Stem slender, rigid, sometimes branching, 1-15 cm long. Leaves few or many, cauline or terminally congested; petioles shorter than or little longer than the leaflets; leaflets linear, oblong or cuneate, emarginate, often conduplicate, usually 0.5-1.5 cm long, glabrous above, with 2 minute apical calli. Peduncles 1-fld., terminal or axillary, 2-10 cm long, with 2 callus-tipped alternate bracts near to or imbricating the calyx. Sepals lanceolate or linear-lanceolate, sometimes acuminate, sharply acute, 5-9 mm long, glabrous, rarely ciliate or glandular-ciliate, often with narrow purple margins, ecallose or with 2 minute and inconspicuous apical calli. Corolla 1.5-3 cm long, glabrous, reddish-purple, rose, orange-rose or white, with a rather narrow funnel-shaped yellow tube; laminae of the petals obovate, about as long as the narrow claw. Filaments very variable in length, the longer sparsely glandular-pilose, with rather long narrow acute teeth. Ovary narrow, 1.5-2.5 mm long, pilose on the upper half or near the apex, the chambers 3-5-ovuled; styles pubescent below, glandular-pilose above. Capsule not exserted. Seeds without endosperm.

Hussey et al. (1997) note that in Western Australia Oxalis glabra is common on heavy soils, in disturbed woodland, paddock edges, along firebreaks and tracks, and other disturbed sites. In Victoria, the species is locally common in weedy mown/slashed nature strips and in degraded grassland on basalt clays at Craigieburn. Also noted from degraded Eucalyptus camaldulensis woodland at Somerton.

Sometimes grown as a garden ornamental.