劲直菝葜 jin zhi ba qia

Smilax rigida Wallich ex Kunth, Enum. Pl. 5: 164. 1850, not Solander (1794); S. myrtillus A. de Candolle var. rigida Noltie.

Shrubs erect. Stem branched, 50--100 cm; branches 2- or 3-angled, with winglike edges; prickles on branches straight, 5--7 mm, rigid. Petiole ca. 1 mm, basally auriculate; auricles paired, lanceolate to ovate, 1--2 × ca. 0.5 mm, membranous with lacerate-fimbriate margin; abscission zone near middle; tendrils absent. Leaf blade cordate to ovate, 1.5--2.5 × 1.2--2.8 cm, main veins (3--)5, adaxially concave. Inflorescence of 1 umbel, basally not prophyllate; peduncle 4--7 mm; umbels of both sexes 2--8-flowered. Male flowers: tepals greenish, 1.2--1.5 × 0.3--0.5 mm; stamens very short. Female flowers: tepals ca. 1.2 mm; staminodes 3. Berries blue-black, 7--9 mm in diam. Fl. Jul, fr. Oct--Nov.

Mixed forests, broad-leaved deciduous forests; 2100--2800 m. S Xizang, Yunnan [Bhutan, Myanmar, Nepal, Sikkim].