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Shrubs or trees, rarely vine-like, lacticiferous, the branches usually whorled. Leaves whorled, (3-)4(-5), ? anisophyllous within a whorl, non-glandular along the midrib, pinnately nerved, membranaceous to coriaceous, sessile to peti-olate, glandular in the axils, sometimes on the petiole; stipules small and decidu-ous. Inflorescences cymose, dichasial, terminal or axillary, few-to m' any-flowered. Flowers ? small; calyx 5-lobed, the lobes equal, without squamellae; corolla salverform, infundibuliform, urceolate, or campanulate, without appendages, the limb 5-lobed, sinistrorsely contorted; stamens 5, included, the filaments short, the anthers free and not agglutinated to the stigma; gynoecium 2-carpellate, apocarpous or syncarpous, the ovary superior, the ovules 2-4, the nectary an-nular or cupuliform, entire or dentate, the style 1, the stigma cylindrical, calyp-triform or sub-mitriform, obscurely biapiculate. Fruit apocarpous or syncarpous, drupaceous; seeds 1-4, naked.
Trees or shrubs with latex. Leaves whorled, rarely opposite, with glands axillary and sometimes on petiole. Cymes pedunculate, terminal or axillary, each branch ends in as many inflorescences and/or branches as leaves in a whorl. Calyx deeply divided, without glands. Corolla white, yellow, green, or pink, rarely with a red tube, salverform or campanulate; tube cylindric, swollen on 1 side at or above middle, villous inside distal half, throat not scaly, often with long hairs inside; lobes overlapping to left. Stamens inserted in widening of corolla tube; filaments very short; anthers ovate, free from pistil head, base rounded; disc ringlike or cup-shaped, entire or lobed at apex. Ovaries 2, free or connate. Style filiform; pistil head drum-shaped, with a pendulous ring, apex shortly 2-cleft. Drupes 2, distinct or connate. Seed 1, without coma.
Perennial shrubs or trees, evergreen; latex white. Stems without spines. Leaves petiolate, 2–5-whorled; lamina entire, herbaceous to coriaceous, glabrous or with simple basifixed trichomes; colleters present. Inflorescence terminal, a simple or compound dichasium, pedunculate. Flowers scented, pedicellate. Calyx lacking colleters. Corolla campanulate, funnel-shaped, salverform or urceolate; tube cylindrical, glabrous, without scales; lobes sinistrorse in bud. Corolline corona absent. Stamens included, inserted in tube near middle or above, not adherent to style-head; anthers ovate. Disc annular or cupuliform. Style-head cylindrical. Fruit drupaceous, apocarpous or syncarpous, globose. Seeds 1 or 2, compressed, globose to ovoid, unwinged, ecomose.
