Cestrum

Shrubs or trees, glabrous to stellately tomentose. Leaves alternate, quite entire. Flowers axillary, in cymose or fascicled inflorescences; upper cymes usually corymbose or panicled at apices of branches, or nearly all lateral at leafless nodes. Calyx campanulate, 5-lobed, valvate. Corolla salver-shaped; lobes 5, induplicate-valvate; tube elongate, cylindric or slightly dilated above, contracted at base around ovary. Stamens included, arising near middle of corolla tube; filaments filiform, pilose, incrassate or with a small tooth near base; anthers short, cells parallel. Disc inconspicuous or rather thick. Ovary usually slightly stalked, 2-locular; style filiform; stigma dilated; ovules 3-6 in each locule, micropyle inferior. Fruit a slightly fleshy berry, indehiscent, globose, ovoid or oblong. Seeds few or by abortion solitary, oblong, nearly smooth; embryo straight or slightly curved; cotyledons either ovate or oblong and much broader than radicle, or semiterete and scarcely wider than it. x = 8 (6) (aneuploids, B-chromosomes, polyploidy).