Deightoniella arundinacea is reported for the first time from Turkey, on Phragmites australis. Pseudorlaya is reported as a new host genus for the powdery mildew species Erysiphe heraclei. The morphology of the two fungi is briefly described.
C1 [Bahcecioglu, Zeliha; Kabaktepe, Sanli] Inonu Univ, Sci & Art Fac, Dept Biol, Malatya, Turkey.