Secamone

Lianes and twining shrubs with milky latex. Leaves sessile or subsessile. Flowers in 2-many-flowered cymes, axillary and terminal, rarely flowers solitary. Sepals ovate to suborbicular, usually with alternisepalous colleters. Corolla with shallow, campanulate tube or divided nearly to base, sometimes with a flap in mouth of tube alternating with lobes; lobes oblong, usually with fleshy, submarginal ridges and sometimes also with decurrent, central ridge. Corona of 5 simple inner lobes +/- adnate to staminal column; lobes usually laterally compressed and curved inwards, sometimes small; outer lobes rarely present as small ridge beneath gymnostegial grooves. Stamens arising on staminal curtain surrounding ovaries and adaxially fused to sides of style head. Anthers 4-locular, with fimbriate, membranous appendages which are sometimes connate. Pollinia 2 in each theca, erect, not surrounded by waxy outer wall; caudicles almost obsolete; corpuscle soft, white, usually larger than pollinia. Style head variably shaped, with thick cylindrical part just above ovaries widening slightly towards apex, narrowing above this into usually bifid apex, with 5 stigmatic zones on sides of lower cylindrical part; pollinarium consisting of a small corpuscle, rarely with one or two small caudicles. Ovary apocarpous, semi-inferior. Follicles paired, fusiform or narrowly cylindric, often acuminate; ventrally dehiscent. Seeds brown, compressed, lanceolate or linear, convex-concave or biconvex, with a single rib on one side, sometimes pubescent, with a tuft of hairs.