Shrubs or lianas. Cymes apparently axillary, extra-axillary, or terminal, often shorter than leaves. Flowers subsessile. Calyx with 5 to many basal glands. Corolla salverform, tube long cylindric; lobes overlapping to right. Corona lobes inserted at throat of corolla tube, adnate to filaments, ovate. Stamens inserted in throat; filaments short, bases broad, connate, upper part narrow, free; anthers adnate to stigma head, apex acuminate, exserted; pollen tetrads in loose masses, 2 in each anther cell and fixed on 1 common retinaculum. Stigma head short conical. Follicles paired, divaricate, linear-lanceolate in outline. Seeds elliptic.

Two species: S and SE Asia, Australia; one species in China.