A new species and two new records of Erysiphe emend. from China

Abstract

A new species of Erysiphe sect. Uncinula, Erysiphe yanshanensis on Hydrangea bretschneideri (Hydmngeaceae) is described, illustrated and compared with the morphologically similar E. hydrangeae. Two new records for China, E. indigoferae (Erysiphe sect. Microsphaera) on Indigofera kirilowii (Fabaceae) and E. plectranthi (Erysiphe sect. Erysiphe) on Rabdosia japonica var. glaucocalyx (Lamiaceae) are reported.