Perisporium alneum Fries, 1829
on Alnus
parasite
Leaf spots with perithecia, that often bear some dark brown bristles at the mouth rim; asci 11-15 X 35-60 µm, sporen 5-6 x 11-17 µm.
host plants
Betulaceae, monophagous
synonyms
Venturia alnea (Fries) Müller, 1958.
references
Brandenburger (1985a: 50).