A NEW VARIETY OF UNCINULIELLA
小钩丝壳属一新变种

A new variety of the genus Uncinuliella,Uncinuliella rosae Zheng & Chert var.pruni Z.Y.Zhao et Z.Q.Yuan on Prunus divaricata Ldb.(Rosaceae), is reported.This powdery mildew was collected from the primeval fruit forests in Daxigou,Huocheng,Xinjiang.Latin and Chinese diagnoses for the new taxon are given.Type specimen of the above new taxon is deposited in HMAAC.