Chengiodendron, C. B. Shang, X. R. Wang, Yi F. Duan & Yong F. Li, 2020

Li, Yong-Fu, Zhang, Min, Wang, Xian-Rong, Sylvester, Steven Paul, Xiang, Qi-Bai, Li, Xuan, Li, Meng, Zhu, Hong, Zhang, Cheng, Chen, Lin, Yi, Xian-Gui, Mao, Ling-Feng & Duan, Yi-Fan, 2020, Revisiting the phylogeny and taxonomy of Osmanthus (Oleaceae) including description of the new genus Chengiodendron, Phytotaxa 436 (3), pp. 283-292 : 289

Key to species of Chengiodendron

1. Leaves lanceolate, oblanceolate or obovate, thin, inflorescence loose ..............................................................................................2

1. Leaves elliptic, thick, inflorescence compact............................................................................................................... C. marginatum

2. Leaves obovate, usually entire; lateral veins invisible .......................................................................................................... C. minor

2. Leaves oblanceolate, usually serrate in upper half; lateral veins visible................................................................ C. matsumuranum