Oxalis knuthiana T.M.Salter

Erect, caulescent, robust, branching, almost glabrous, often 20-30 cm, or in shade up to 70 cm high. Bulb ovoid, oblong-ovoid or conical, up to 7 cm long, with numerous papery tunics, the outer often ligulate, blackish-brown, paler at the margins. Rhizome up to 15 cm long, thick. Stem much branched, succulent, 4 mm in diam. at the base; branches alternate, the lower arising from the axils of cauline scales, the upper from leaf-axils. Leaves petiolate, the lower alternate or rarely binate, the upper usually 2-4 verticillate; petioles up to 5 cm long; leaflets 3, with short blackish petiolules, pubescent below, minute, but developing after the flowering season, glabrescent, very broadly cuneate-obcordate, widely incised at the apex, up to 3 mm long, 5.5 mm broad. Peduncles 3-7-fld., axillary or terminal, 3-8 cm long; bracts up to 3 mm long, orange-callose at the apex; pedicels 1-1.5 cm long. Sepals ovate-lanceolate, up to 5 mm long, purplish towards the apex, sometimes minutely penicillate, ecallose. Corolla up to 1.3 cm long, yellow, with a short broadly funnel-shaped concolorous tube; petals subcuneate, more or less rounded at the apex, very obliquely attentuate at the base, up to 8 mm broad, with a narrow reddish-purple outer margin beneath. Filaments minutely glandular, the shorter 2.5-3 mm, the longer 3.5-5.5 mm long, with very short broad truncate teeth. Ovary pilose at the apex, the chambers 2-3-ovuled; styles pilose with simple and capitate hairs admixed. Capsule scarcely exserted. Seeds with thin endosperm, the embryo greenish.