千解草 qian jie cao

Premna humilis Merrill; P. nana Collett & Hemsley; P. obovata Merrill; Pygmaeopremna herbacea (Roxburgh) Moldenke.

Subshrubs ca. 9 cm tall. Rhizomes woody. Branches sparsely yellow-brown pilose or glabrous. Leaves rosulate; leaf blade obovate-oblong to spatulate, 3-14 X 2-6(-9) cm, sparsely pubescent and yellow glandular, base cuneate, margin sparsely serrate to sparsely crenulate above middle or rarely entire, apex rounded. Inflorescences paniculate capitate corymbs, 1-2.3 X 1-2.4 cm, ca. 10-flowered; peduncle 5-13 mm, densely puberulent; bracts linear to lanceolate, 3-8 mm. Calyx cup-shaped, ca. 2.5 mm, outside pubescent and yellow glandular. Corolla purple in bud, white in bloom, slightly 2-lipped, 4-lobed, outside puberulent. Ovary 2-locular. Fruit ca. 5 X 4 mm. Fr. Jun.

Dry places; 200-1700 m. Hainan, W Yunnan [Bhutan, Cambodia, India, Laos, Myanmar, Nepal, New Guinea, Philippines, Thailand, Vietnam; Australia].