Herissantia crispa (L.) Briz.

Herbs perennial, to 1.5 m tall, sometimes procumbent; stem hairy with white, stellate hairs. Stipule filiform, 3-7 mm, pilose; petiole 0.2-5 cm, stellate pilose with long hairs; leaf
blade cordate, 2-7 × 2-7 cm, both surfaces stellate pilose, base cordate, margin crenate, apex acuminate. Pedicel slender, 2-4 cm, long pilose, articulate and becoming knee-shaped near tip. Calyx disk-shaped, 4-5 mm, densely long stellate pilose, lobes ovate, apex acuminate. Corolla pale yellow, ca. 1 cm in diam.; petals obovate, 6-10 mm. Schizocarp globose, 9-13 mm in diam., swollen, lantern-shaped, sparsely long pilose, apex short-beaked; mericarps 8-15, deciduous, loculicidal, walls membranous, persistent receptacle ca. 2 mm. Seeds black, reniform. Fl. year-round. 2n = 14.

Open forests, moist meadows, coastal areas. Hainan, Taiwan [India, Indonesia, Vietnam; native to tropical America, now a pantropical weed].

Sida crispa Linnaeus, Sp. Pl. 2: 685. 1753; Abutilon crispum (Linnaeus) Medikus; Beloere crispa (Linnaeus) Shuttleworth ex A. Gray; Bogenhardia crispa (Linnaeus) Kearney; Gayoides crispa (Linnaeus) Small; Pseudobastardia crispa (Linnaeus) Hassler.