Shrub of 1 to 4 m in height. Alternate leaves, ovate, sharp to acuminate in the apex, serrate. 5 to 7 bracteoles, linear. Campanulate calyx; white, red-purple, yellow or orange corolla, variable in size, very bright and colourful; staminal tube longer than petals. Oblong capsule almost 3 cm in diameter.

Shrub or small tree of up to 4 m. Ternate leaves, elliptic to elliptic-oblanceolate, 5 to 21 cm, short-acuminate. Inflorescence of 3 to 15 cm in length; tubular corolla of 1.5 to 2 cm, orangish or reddish colour, puberulous. Subglobose or ellipsoid fruit, 6 to 10 mm, reddish when young, black when ripe.

Shrub or tree of up to 20 m Leaves oblong to broadly ovate, of 3-15 cm, acute to acuminate, serrate, stellate-tomentose, markedly symmetrical. Fragrant, yellowish flowers in small axillary clusters, with 5 petals of 3 mm. Woody, globular or oval fruit, measuring 2-4 cm, with hard tubers.

Shrub of 1 to 4 m. 3 to 7 lobed leaves, the lobes are ovate or lanceolate, with stipules. Solitary flowers, with broadly ovate, foliaceous bracts of the calyculus; calyx truncated; petals up to 8 cm, yellow with a red spot at the base. Ovoid capsule, 3 to 4, locular, acuminate, prominently dotted. Rostrate, ovate seeds, lanate, long white filaments (cotton).