假含羞草 jia han xiu cao

Mimosa plena Linnaeus, Sp. Pl. 1: 519. 1753.

Herbs, perennial, terrestrial or subaquatic. Stems erect or ascending, branched. Stipules persistent, lanceolate, ca. 1 cm, base obliquely cordate; pinnae 4-10 pairs, with a suppressed gland between or just below lowest pair of pinnae; leaflets 9-40 pairs per pinna, linear-oblong, 4-18 × 1.5-3 mm, both surfaces glabrous, base rounded, apex obtuse, acute, or mucronate. Heads ovoid, ca. 2 cm. Calyx campanulate, ca. 1.5 mm, 5-dentate. Pet­als lanceolate, ca. 3 mm, fused at base. Stamens 10; filaments ca. 6 mm, with stipitate gland at apex. Staminodes petal-like, 8-10 mm. Legume oblong, 5-10 × 1.6-2 cm. Seeds 5-20. Fl. Aug-Oct, fr. Oct-Nov.

Planted or occasionally escaped in wet places; sea level to 100 m. Fujian, Guangdong, Taiwan [native to tropical America].