溪边桑勒草 xi bian sang le cao

Sonerila laeta Stapf; S. rivularis Cogniaux.

Herbs or shrublets, 20-30 cm tall, sometimes stoloniferous. Stems obtusely 4-sided, glandular puberulous or glabrescent. Petiole (0.5-)1.2(-3) cm, puberulous; leaf blade obovate to elliptic, (2.5-)6(-14) × 2.5-4.5 cm, papery to submembranous, abaxially scattered setose on veins, adaxially remotely setose between veins and sometimes with white, orbicular patches (maculae), secondary veins 1 or 2 on each side of midvein, base cuneate to obtuse and sometimes slightly oblique, margin serrulate with each tooth having a terminal seta, apex acuminate to acute. Inflorescences terminal, scorpioid cymes, 1.5-3.5 cm, furfuraceous, glabrescent; peduncle 0.7-2 cm, 4-angled. Pedicel 1-3 mm, sparsely furfuraceous and with glandular trichomes. Hypanthium funnel-shaped, 5-6 mm, 3-sided, 6-ribbed. Calyx lobes broadly triangular, less than 1 mm, apex acute. Petals purple, oblong, 5.5-10 × 2.5-6 mm, apex acute with 1 glandular trichome at tip. Stamens 3, equal, 5.5-12 mm; anthers 3-7 mm. Ovary flask-shaped to cup-shaped, apex with a membranous 3-lobed crown. Capsule campanulate, 3-sided; hypanthium 6-8 × 4-6 mm, furfuraceous or glabrescent. Fl. Jun-Sep, fr. Aug-Dec.

Thickets, hillsides, valleys, trailsides, streamsides, shaded damp places; 100-1300 m. Fujian, Guangdong, Guangxi, Xizang (Cona), Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, Vietnam].