Stenostelma

Perennial herbs with thickened rootstock. Leaves shortly petiolate, linear. Inflorescence of very shortly pedunculate subglobose umbels lateral at nodes. Calyx 5-partite; segments linear-lanceolate to lanceolate, with scales within at base. Corolla 5-lobed; lobes green without, white within, ovate-oblong, recurved at tips and sometimes notched at apex; tube shallowly basin-shaped. Corona 5-lobed, arising at or near base of staminal column, exceeding corolla lobes, simple, erect, narrowly elliptic or lanceolate, keeled all down back and +/- acutely triquetrous in cross section, with a rhomboid wing-like dilation on back at base, tapering above into an acute incurved-hooked apex, without an appendage on inner face; purplish. Anthers 2-locular, with a membranous ovate appendage. Pollinia pendulous, oblong or oblong-ovate; caudicles shorter than pollinia. Style head slightly projecting above staminal column, depressed-truncate, with 5 short, thick, fleshy lobes.