Tropical Fanpetals

Perennial herb up to c. 60 cm tall, branching from the base. Stems and branches covered with stiff hairs both appressed and spreading. Leaves ovate, up to 7 × 4 cm, usually with a long drawn-out pointed apex and a distinctly cordate base, covered with more or less stiff appressed hairs on both surfaces; margin regularly serrate; petiole almost a long as the leaf blade, covered with stiff appressed and spreading hairs. Flowers in axillary clusters. Calyx 5-7 mm long, angular, with stiff appressed and spreading hairs, lobed to just beyond the middle; lobes triangular with a bristle-like tip; petals c. 9 mm long, more or less notched, pale yellow to buff, sometimes reddish in the centre. Mericarps 5, c. 2.5 mm long, shortly beaked.

Widespread throughout the tropics and subtropics.

Sida urens là một loài thực vật có hoa trong họ Cẩm quỳ. Loài này được L. miêu tả khoa học đầu tiên năm 1759.