Oncella

Small aerial, hemiparasitic well-branched shrubs from a single haustorial attachment; twigs slightly compressed to angular, soon terete; hairs stellate and dendritic. Leaves opposite or subopposite, shortly petiolate, penninerved. Inflorescence a raceme; bracts small, unilateral. Calyx short, entire to shortly toothed. Corolla 5-lobed, joined halfway, regular, orange to pink or red, with a dark glandular patch at base of each lobe, stellate-pubescent, weakly explosive at anthesis; tube with a basal swelling; tip of bud fusiform to obovoid; lobes usually erect, often partly cohering at tips, occasionally reflexed to coiled. Filaments arising +/- halfway up corolla lobes, slender in lower persistent part, jointed and slightly thickened above, upper part coiling, breaking off to varying degrees; anthers 4-thecous, basifixed, very short. Style filiform; stigma ovoid to obovoid or fusiform. Fruit a berry, white to red (sometimes turning black), ellipsoid, with persistent calyx.