Oxalis orbicularis Sialter

Slender, stemless, up to 12 cm high. Bulb narrow-ovoid, with a long apical beak, the older bulbs persisting on the rhizome; tunics blackish-brown, the outer loose, undulate and tortuous, often splitting and so linear or ligulate. Rhizome glandular-pilose. Leaves few; petioles slender, glabrous or minutely glandular-pilose, 3-6 cm long, swollen but not flattened below the basal articulation, slightly pulvinate at the apex; leaflets 3, shortly petiolulate, sub-orbicular, very broadly cuneate at the base, thin, minutely emarginate, with numerous elongate orange calli around the extreme margin, entirely glabrous or glandular-ciliate, usually with a pale, russet or purple medial streak above, veined and often purple below, the medial 1.1-1.3 cm long, 1.3-1.6 cm broad, the lateral a little smaller. Peduncles 1-fld., glabrous or minutely glandular-pilose, about twice as long as the leaves, with 2 minute bracts at an articulation a little above the middle. Sepals oblong-lanceolate, 3-4 mm long pilose and ciliate particularly on the upper part, with 2 elongate reddish-brown converging apical calli. Corolla pale violaceous, 1.4-1.9 cm long, with a yellow tube; petals narrow-cuneate, very slightly attenuate to the base, 4-5.5 mm broad, sometimes with a narrow purple margin on the middle part. Filaments, the shorter 2.5-4 mm, the longer 3.5-6.5 mm long, sparsely glandular-pilose, edentate. Ovary glabrous, the chambers 3-4-ovuled; styles with simple hairs below, glandular-pilose above. Capsule scarcely longer than the calyx.