Plant Parasites of Europe

leafminers, galls and fungi

Sclerotinia borealis

Sclerotinia borealis Bubák & Vleugel, 1917

snow blight of grass

on grasses


In white down, in early spring, develop black sclerotia. They form long-stalked light brown cupulate apothecia. Asci 8-14 x 180-250 µm, spores 7-12 x 16-28 µm.

host plants

Poaceae, oligophagous

Arrhenatherum; Dactylis; Phleum; Secale; Triticum.


Myriosclerotinia borealis (Bubák & Vleugel) Kohn, 1979.


Brandenburger (1985a: 756).

Last modified 14.xii.2022