DOI: 10.5943/ajom/7/1/9 ISSN: 2651-1339
Pseudoidium peltophori on the ornamental tropical tree legume Peltophorum pterocarpum: a new competing synonym of Erysiphe quercicola, and a new host record for Taiwan
Y.W. Yeh, R. KirschnerAn anamorphic powdery mildew fungus was observed on the leaves of two individual trees of Peltophorum pterocarpum (Fabaceae) for several years in Taiwan. The host and morphology initially suggested Pseudoidium peltophori. While the morphology of some conidiophores showed atypical long foot cells, sequences of the internal transcribed spacer ribosomal DNA and beta-tubulin genes identified the species as Erysiphe quercicola. Based on morphology and phylogeny, Pseudoidium peltophori is considered a synonym of E. quercicola, in addition to the older E. cinnamomi, originally described from Cinnamomum camphora in Taiwan.