Podosphaera aucupariae

Podosphaera aucupariae is a species of powdery mildew in the family Erysiphaceae. It is found in North America and Europe, where it affects rowans/mountain-ashes (genus Sorbus) and service-tree (genus Aria).^[1]

Podosphaera aucupariae
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Leotiomycetes
Order:	Helotiales
Family:	Erysiphaceae
Genus:	Podosphaera
Species:	P. aucupariae
Binomial name
Podosphaera aucupariae Erikss., 1886
Synonyms
Podosphaera clandestina var. aucupariae (Erikss.) U. Braun, 1984

Description

The fungus forms thin, white irregular patches on the leaves of its host. It is the only species on Sorbus. On Aria, Podosphaera niesslii can also be found, so care should be taken to identify.

Taxonomy

The fungus was formally described in 1886 by Eriksson.