墨脱紫茎 mo tuo zi jing

Hartia brevicalyx Hung T. Chang, Acta Sci. Nat. Univ. Sunyatseni 22(3): 65. 1983, not Stewartia brevicalyx S. Z. Yan (1981).

Small trees, evergreen. Current year branchlets pubescent. Petiole ca. 1 cm, grayish brown villous, wings ca. 1.5 mm wide; leaf blade oblong, 6-10 × 2.5-4 cm, leathery, abaxially pubescent and hirtellous along midvein, adaxially green, glabrous, and shiny, secondary veins ca. 10 on each side of midvein, abaxially raised, and adaxially visible, base rounded, margin serrulate, apex abruptly acute to slightly obtuse. Flowers not seen. Capsule ovoid, ca. 1.5 × 1.3 cm, brown pubescent; pedicel 5-8 mm, villous or glabrescent; bracteoles caducous; persistent sepals ovate, 7-8 mm, outside brown villous, apex rounded to obtuse. Fr. Oct.

● Forests; 1500-1800 m. Xizang (Mêdog).