Leaf blight (Linospora tetraspora)

• French disease name: Brûlure des feuilles à Linospora tetraspora
• Pathogen name: Linospora tetraspora G. E. Thompson
• Kingdom: Fungi
• Phylum: Ascomycota
• Class: Sordariomycetes
• Order: Diaporthales
• Family: Gnomoniaceae

Distribution

• Canada

Damage, symptoms and biology

Irregular blotches of brownish grey discoloured tissue along leaf veins. Scattered black stromata appear as black dots, 0.1 mm diameter.

Canadian Forest Service Publications

Leaf blight (Linospora tetraspora)

Information on host(s)

Main host(s)

• Balsam poplar
• Black cottonwood

Photos

Stromata of Linospora tetraspora on discoloured leaf tissue

Eric Allen

A balsam poplar infected by Linospora tetraspora, the causal agent of Linospora leaf blight.

A balsam poplar leaf infected by Linospora tetraspora, the causal agent of Linospora leaf blight.

Balsam poplar leaves infected by Linospora tetraspora

Balsam poplar leaves infected by Linospora tetraspora

Fruiting bodies of Linospora tetraspora