Sawadaea tulasnei

Sawadaea tulasnei is a form of powdery mildew is a species of fungus in the family Erysiphaceae.

This fungus attacks the leaves of the Acer platanoides (Norway maple) in North America, and in Great Britain and/or Ireland, Acer palmatum (also known as the Japanese Maple or Smooth Japanese Maple).

Synonyms

 * Erysiphe varium Fr. 1822
 * Uncinula aceris var. tulasnei (Fuckel) E. S. Salmon 1900
 * Uncinula bicornis var. tulasnei (Fuckel) W. B. Cooke 1952
 * Uncinula tulasnei Fuckel 1866