Annual to perennial herbs, sometimes shrubby. Leaves simple, entire to coarsely and irregularly dentate. Flowers solitary, axillary. Calyx campanulate, 5-lobed, unwinged, strongly accrescent in fruit. Corolla broadly campanulate to funnel-shaped, shallowly to deeply lobed. Ovary 2-locular. Fruit a berry. Worldwide: c. 90 species from tropical and subtropical America, mainly in Mexico. Many species now widely dispersed in warm and temperate regions of the Old World and Australia, mostly as weeds of cultivation; some cultivated for their edible fruit. Burundi: 2 taxa. |
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