Stylidium sinicum Hance.

Herbs 5-13 cm tall, annual. Stems compressed. Leaves in a basal rosette, with a short petiole; leaf blade ovate-orbicular, ovate, or obovate, 5-8 mm, glabrous, veins obscure, base cuneate, margin entire, apex obtuse to rounded. Inflorescences lax spikes; scapes 1-3, simple or dichotomously branched, covered with sparse short glandular trichomes; bracts ovate, less than 1 mm. Flowers sessile. Calyx tube (hypanthium) linear, with sparse glandular trichomes; lobes partly connate, with 3 distinct and 2 connate into a shallowly 2-lobed segment. Corolla white, ca. 2 mm, glabrous; tube slightly shorter than [or ca. equal to] calyx lobes; throat appendages minute [or absent]; labellum minute, ovate; lower pair of lobes much longer than upper pair, lobe apices shallowly 2-lobed [or entire]. Gynostemium ca. 3.5 mm. Capsule columnar, ca. 8 mm. Fl. Oct-Nov.

Moist grassy places by streams in coastal hilly areas. Guangdong, Hainan [Cambodia, Sri Lanka, Thailand, Vietnam].