Prunus L. subgenus Cerasus (Mill.) A.Gray is a controversial group in infra-subgeneric and species classification. Based on 30 morphological characters data

clustering analysis on 41 species was performed to infer the infra-subgeneric and species classification. The result shows that 41 species are divided into 11 groups

6 of them only contain 1 species

and others include 2 or more species7 species with controversies

Prunus conradinae Koehne

Prunus glabra (Pamp.) Koehne

Prunus henryi (C.K.Schneid.) Koehne

Prunus duclouxii Koehne

Prunus yunnanensis Franch

Prunus pseudocerasus Lindl. and Prunus pusilliflora Cardot are clustered into 1 group

indicating their related relationship; It would be appropriate to put them in one section or series. Prunus clarofolia C.K.Schneid.

Prunus polytricha Koehne

Prunus tatsienensis Batalin are in a group with a close distance in clustering analysis. The disciform glands in the margin of bracts are the distinguishing characters of Prunus tatsienensis to other 2 species

but the character was not found in the original literature and type specimen. And the densely villous of the Prunus polytricha is indistinguishable to other 2 species. The 3 species are proposed to be combined to 1 species.