Oncinotis Benth.

Climbing shrubs or lianas; white latex present; branchlets (sub-)opposite, terete. Leaves (sub-)opposite; petiole with glands on the adaxial side; domatia in some vein axils, consisting of pits, often with a ciliate margin or of a tuft of hairs. Inflorescences terminal or axillary, thyrsoid, many-flowered; bracts deciduous. Flowers 5-merous, fragrant. Sepals imbricate, ciliate. Corolla tube shortly pubescent outside, inside with tufts of stiff hairs, alternating with the stamens, at the mouth with 5 alternipetalous corona scales; lobes overlapping to the right, entire, recurved. Stamens included, connivent into a cone; filaments short; anthers partly fertile, below the fertile part inside a nearly oblong patch, the retinacle, with minute hairs along the margin adhering to the pistil head. Ovary semi-inferior; carpels two, connate at the extreme base, densely pubescent; disk present, adnate to the ovary at the extreme base, composed of a ring and five lobes; pistil head of a slightly 5-winged upper and a cylindrical lower portion to which the 5 retinacles adhere and a bifid stigmoid. Fruits pendulous, of two follicles connate at the extreme base, dehiscent along an adaxialline; exocarp woody; endocarp stiff, thinly pergamentaceous. Seeds attached to the adaxial side of the fruit, with an apical coma directed towards the apex of the fruit.