Additions to the powdery mildew fungi of Iran

Neoerysiphe nevoi on Crepis kotschyana and Hedypnois rhagadioloides, Leveillula linariae on Linaria melanogramma and Golovinomyces asterum var. moroczkovskii on Symphyotrichum squamatum are newly reported from Iran. Nine new host-powdery mildew combinations are reported from Iran: Neoerysiphe galii − Galium aparine; Podosphaera xanthii − Phlox paniculata; Erysiphe syringae-japonicae − Ligustrum sp.; Erysiphe cruciferarum − Barbarea sp.; Golovinomyces depressus − Centaurea depressa; Golovinomyces montagnei − Notobasis syriaca; Golovinomyces orontii − Papaver somniferum; Golovinomyces cynoglossi − Lithospermum arvense; Leveillula picridis − Launaea acanthodes. The following host plants are reported as Matrix nova for their related fungal species: Crepis kotschyana and Hedypnois rhagadioloides for Neoerysiphe nevoi; Phlomis herba-venti subsp. kopetdaghensis for Neoerysiphe galeopsidis; Euphorbia hebecarpa and Papaver macrostomum for Leveillua taurica s.str.; Paracaryum rugulosum for Golovinomyces cynoglossi; Euphorbia tithymaloides for Podosphaera euphorbiae; Iranecio paucilobus for Leveillula lappae.