Teleomorphs of powdery mildew fungi were newly recorded in Japan on seven plant species, viz. Podosphaera clandestina var. clandestina on Spiraea dasyantha, Erysiphe schizophragmatis on Hydrangea petiolaris, E. izuensis on Rhododendron reticulatum, E. viciae-unijugae on Vicia venosa subsp. cuspidate var. subcuspidata, Neoerysiphe galeopsidis on Lamium amplexicaule, Golovinomyces orontii on Galium spurium L. var. echinospermon (Wallr.) Hayek and Phyllactinia alni on Hamamelis japonica var. bitchuensis. Of these, H. petiolaris, R. reticulatum, V. venosa f. minor and H. japonica var. bitchuensis were new host plants for powdery mildews in the world.
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