Premna urticifolia Rehder

Medicinal.

Allied to Premna glandulosa and P. rubroglandulosa but differs in having yellow glandular leaf blades pitted by deciduous glands.

Shrubs 1-3 m tall. Branchlets with small elliptic and round lenticels, pilose when young, glabrescent. Petiole 1-4 cm, circinate pubescent; leaf blade ovate, 3-9 X 2-6 cm, submembranous, sparsely pubescent, glandular, usually pitted by deciduous glands, base rounded to cordate, apex acuminate. Inflorescences subglobose, 1.5-2.5 X 2-3.5 cm; peduncle 1-2.6 cm; bracts linear, ca. 6 mm, densely pubescent. Pedicel densely pilose, glandular. CalyX cup-shaped, ca. 2 mm, slightly 2-lipped, both surfaces pilose and glandular; teeth 5, obtusely triangular, 0.5-0.8 mm. Corolla pinkish, ca. 6 mm, slightly 2-lipped, 4-lobed, outside pilose and glandular, villous in throat; upper lip entire, covering other 3 lobes in bud. Ovary glabrous, apically yellow and purple-red glandular. Fruit black, ovate, 3-5 X 2-4 mm, longer than calyx. Fl. and fr. Jul-Sep.

S Yunnan

* Mixed forests on mountain slopes; ca. 1600 m.