Annosum stain (Heterobasidion annosum) in a cross-section of wood.
William Jacobi
1502037
Diagram or Graphic
Annosus root rot life cycle - title slide
USDA Forest Service - Region 8 Archive
1241680
Feature(s)
One means of identifying annosus root disease is to incubate freshly cut sections of infected wood in a plastic bag to stimulate production of the asexual stage, Spiniger meineckellum (40x).
Robert L. James
1241677
Fruiting Bodies
Annosus root disease often is diagnosed by looking in hollows of nearby stumps where the conks are found. The surface is gray or brown.
Robert L. James
1241678
Fruiting Bodies
Annosus root disease often is diagnosed by looking in hollows of nearby stumps where the conks are found. The lower surface has tiny pores and is cream colored.
John W. Schwandt
1371040
Fruiting Bodies
At the base of the trunk. Göttingen, Germany
Andrej Kunca
1371041
Fruiting Bodies
Göttingen, Germany
Andrej Kunca