Calycosiphonia Pierre ex Robbr.

Shrubs or small trees. Leaves opposite, petiolate, membranous to subcoriaceous, glabrous; sparsely ciliate; stipules shortly sheathing with triangular limbs. Inflorescences axillary with 1–4 flowers borne in each axil, stalked; bract and bracteoles 2–3, saucer-shaped, usually totally obscuring the pedicel, pubescent. Flowers 7–8-merous; calyx tube campanulate, obscured by the upper bracteolar cupule; corolla white or yellow, glabrous outside; tube cylindric below but widening above; lobes contorted to the left in bud, 7–8 spreading. Ovary 2-locular. Fruit rather fleshy, 1–2-seeded. Seeds dark in colour, endosperm dark purplish in colour (in preserved material), entire.

Worldwide: Two species in tropical Africa.

Mozambique: 1 taxon.