无刺菝葜 wu ci ba qia

Shrubs suberect, unarmed. Stem branched, smooth. Petiole 4--6 mm, narrowly winged for ca. 3/4 its length; wings each with a small auricle (0.3--0.5 mm) apically; abscission zone subapical; tendrils absent. Leaf blade ovate, 1--3.3 × 0.6--1.5 cm, rounded at base. Male inflorescence of 1 umbel, basally not prophyllate; peduncle 3--4 mm; umbel usually 7--10-flowered; pedicels 2--5 mm. Male flowers: tepals yellow, ovate, ca. 1 × 0.6 mm; stamens nearly 1/2 as long as tepals; filaments free. Female flowers and fruit unknown. Fl. Jun.

* Rocks; ca. 2400 m. ?Xizang, Yunnan.