Nicotiana L.

17 species in Aust. (16 endemic, 1 naturalized); all states and territories

Herbs or shrubs. Leaves alternate. Calyx acutely 5-toothed. Corolla tubular, with 5 short lobes. Stamens 5, enclosed in the corolla tube. Ovary 2-locular; stigma capitate. Fruit a capsule enclosed in the persistent calyx, opening septicidally in 2 bifid valves.