Oxalis brasiliensis Lodd., G.Lodd. & W.Lodd.

Perennial herb with stems not evident; bulb globose, 10–13 mm long, tunics whitish or straw-coloured, longitudinally ridged, the outer tunics (5–) 8–13-veined; bulbils formed from old bulbs on stolons to 15 cm long. Aerial propagules (highly reduced leafy shoots) sometimes produced at bracteole region of scape. Indumentum of simple eglandular hairs. Stipules conspicuous, long and narrow, tapering into petiole. Leaves basal, trifoliolate; petiole 4–10 cm long, sparsely hairy; leaflets subsessile, cuneate to obcordate, emarginate to slightly lobed (sinus to about a fifth the length of leaflet), 6–40 mm long, 6–45 mm wide, mid to dark green, the upper surface sparsely pubescent, the lower surface moderately pubescent, margins ciliate, lobes with rounded apices to c. 12 mm apart. Inflorescences basal, 1 or 2 (3)-flowered; peduncles to 30 cm long, longer than leaves, sparsely hairy; pedicels 0.5–3 cm long, hairy. Bracts situated at base of pedicels, ovate to narrow triangular, 1–2.2 mm long, calli absent. Sepals lanceolate, 5–7 mm long, sparsely hairy, green with 2 orange apical calli. Flowers tristylous (long-styled, mid-styled and short-styled). Petals cuneate, 18–30 mm long, pale pink, deep pink or purple-pink with outer surface paler and with scattered, appressed hairs. Stamens in 2 whorls. Stamens at 2 levels, the shorter filaments ± glabrous, the longer with scattered, appressed hairs. Ovary densely antrorsely-pubescent. Styles with scattered appressed hairs below, glandular-pubescent above. Capsules not developed in Australia.

It is a subtropical plant. In Argentina it grows from sea level to 500 m above sea level.