Trees,, small to medium-sized, the stems somewhat fistulose lactescent. Leaves alternate, non-glandular, pinnately-nerved; petiolate, sparsely glandular in the axils. Inflorescences thyrsiform, mostly terminal, several to many flowered. Flowers mostly large; bracts conspicuous, foliaceous or petaloid, caducous, glandular in the axil; calyx 1-5 lobed, the lobes unequal and reduced, sometimes obsolete, without squamellae within; corolla salverform, white, without appendages, the tube straight, the limb 5-lobed, the lobes sinistrorsely convolute; stamens 5, the anthers free and not agglutinated to the stigma, without an enlarged connective; gynoecium 2-carpellate, apocarpous, the ovary subinferior, the ovules numerous, nectaries absent, the style 1, the stigma fusiform below and biapiculate above. Fruit apocarpous, of 2 follicles, somewhat compressed; seeds numerous, dry, + concentrically winged.
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