Beentje, H. (2021) Apocynaceae, sous-familes I. Apocynoideae et II. Rauvolfioideae Flore d' Afrique Centrale Jardin botanique de Meise
Shrubs or small trees, with white latex and with simple or forked spines. Branches repeatedly dichotomously branched. Stipules 0. Leaves opposite. Flowers in terminal corymbs or 1-5-flowered cymes. Calyx lobes imbricate, free to base. Corolla salver-shaped; tube cylindric; lobes contorted, overlapping either to left or right. Stamens inserted at middle or towards top of corolla tube; anthers subsessile, glabrous. Ovary with 2 carpels, with 1-4 or rarely many ovules per loculus. Fruit an ellipsoid or ovoid berry. Seeds discoid or flattened-ellipsoid, velutinous. Worldwide: 37 species in the warm Old World, eastwards to Australia and New Caledonia DRC: 1 cultivated taxon. Insects associated with this genus:
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