Scandent shrub or climber, up to 10 m high. Leaves thin-chartaceous, lanceolate sometimes ovate in outline, (5.5-) 12-14 by (2.5-) 5.5-7 cm; Inflorescences in the axils of foliage leaves, spiciform, up to c. 3.5 cm long, internodes very short or obscure, sparsely puberulous or almost glabrous; Stamens 6; Capsules oblong-obovoid, 1.7-2.5 by c. 1.2 cm, 6-ridged, distinctly transversely rugose outside (marked by the seeds). Seeds ovate, c. 5 by 4 mm, not winged, granulate on both surfaces.
Asia-Tropical: Borneo present (Sabah present, Sarawak present); Malaya (Peninsular Malaysia present), Dindings present, Johore present, Mt Buduk Rakik present, Mt Kinabalu present, NE. Kalimantan present, Perak present, Sandakan present
Malesia: Malay Peninsula (Dindings, Perak, Johore), Borneo (Sarawak: Kelabit Highlands; Sabah: Mt Kinabalu, Sandakan; NE. Kalimantan: Mt Buduk Rakik).