毛脉杜茎山 mao mai du jing shan

Shrubs 1.5-2(-5) m tall. Branchlets angular, reddish hirtellous and glandular granulose, glabrescent; pith solid. Petiole canaliculate, 7-10 mm, hirtellous, glabrescent; leaf blade elliptic, oblong, or lanceolate, 6-14 × 2.5-4.8 cm, base broadly obtuse to rounded, margin dentate distally and entire toward base, apex acuminate to caudate-acuminate or rarely acute; lateral veins 7 or 8 on each side of midrib, hirtellous or subglabrous, punctate-lineate, ending in glandular teeth, submarginal vein absent. Inflorescences axillary, paniculate, 3-5 cm, hirtellous; bracteoles oblong-ovate or ovate, 0.6-0.8 mm, puberulent, ciliate. Flowers white, ca. 2 mm. Pedicel 1.2-1.5 mm, puberulent. Calyx lobes broadly ovate, punctate-lineate, glabrous, margin entire, ciliolate, apex acute. Corolla campanulate, ca. 1.2 mm; lobes broadly ovate or subrounded, erose, subequalling tube. Filaments ca. 1 mm, longer than anthers; anthers elliptic. Pistil included. Style very short, persistent. Fruit globose or ovoid, 3-4 mm in diam., glabrous, somewhat fleshy, ribbed; persistent calyx lobes meeting at about style base, exposed part ca. 1/3 fruit length.

Broad-leaved forests, hillsides, valleys, riverbanks; 1300-1800 m. Xizang, NW Yunnan [Myanmar]