Coprosmanthus oldhamii (Miquel) Masamune var. daibuensis (Hayata) Masamune; C. pseudochina Masamune var. daibuensis (Hayata) Masamune; Smilax flaccida C. H. Wright; S. herbacea Linnaeus var. angusta C. H. Wright; S. herbacea var. daibuensis Hayata; S. herbacea var. foetida H. Léveillé; S. herbacea var. heterophylla H. Léveillé; S. herbacea var. lancilimba Merrill; S. higoensis Miquel var. maximowiczii (Koidzumi) Kitagawa; S. maximowiczii Koidzumi; S. oldhamii Miquel var. daibuensis (Hayata) T. Koyama; S. ovatorotunda Hayata; S. riparia f. ovatorotunda (Hayata) T. Koyama; S. takaoensis Hayata.

Stem, branches, leaves, and inflorescence glabrous. Female flowers: staminodes absent.

Forests, thickets, grassy slopes, hillsides along valleys; near sea level to 1600 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, ?Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Korea, Philippines].