粉叶轮环藤 fen ye lun huan teng

Cissampelos hypoglauca Schauer, Nov. Actorum Acad. Caes. Leop.-Carol. Nat. Cur. 19(Suppl. 1): 479. 1843; Cyclea deltoidea Miers; C. migoana Yamamoto.

Vines, woody when old, glabrous except for hairy leaf axils. Branchlets slender. Petiole slender, 1.5-4 cm; leaf blade usually conspicuously peltate, ovate-triangular to ovate, 2.5-7 × 1.5-4.5 cm or slightly more, papery, both surfaces glabrous or sparsely whitish puberulent, base truncate to rounded, margin entire, slightly involute, apex acuminate, palmately 5-7-veined, slender, reticulation not very conspicuous. Inflorescences axillary. Male inflorescences scattered spicate; rachis unbranched or sometimes shortly branched at base, slender, glabrous; bracts small, lanceolate. Male flowers: sepals 4 or 5, free, obovate or obovate-cuneate, 1-1.2 mm; petals 4 or 5, usually connate, cup-shaped, rarely free, 0.5-1(-1.5) mm; synandrium slightly exserted, 1-1.2 mm. Female inflorescences thicker, thyrsoid; rachis conspicuously twining, up to 10 cm. Female flowers: sepals 2, rotund, ca. 0.8 mm in diam.; petals 2, unequal, large one ca. as long as sepals; ovary glabrous. Drupes red, glabrous; endocarp ca. 3.5 mm, subtruncate or slightly emarginate, abaxially bearing 3 rows of tubercles, row bordering condyle sometimes inconspicuous.

Forest margins, shrublands on hills. C and S Fujian, Guangdong, Guangxi, Guizhou, Hainan, S Hunan, C and S Jiangxi, SE Yunnan [N Vietnam].