shrubs or trees. Leaves opposite, elliptic, oblong or lanceolate, glabrous.
Cymes peduncled, axillary and dichotomously-branched. Calyx 5-partite,
glandular or eglandular inside. Corolla white, usually hypocrateriform, tube
cylindrical, lobes longer than tube, broad. Stamens 5, adnate to the top of the
tube, filaments very short, anthers connivent and adhering to stigma. Connectives
with a large dorsal gland. Disc 5-lobed, annular or cup-shaped. Follicles 2,
oblong. Seeds crowded with coma.