clinker polypore (Inonotus obliquus ) on paper birch (Betula papyrifera ) - 1409078

clinker polypore
Inonotus obliquus (Pers.) Pilát

Host: paper birch (Betula papyrifera Marsh.)
Descriptor: Research
Description: Many fungi produce wedges in bark. Trees usually respond by producing a blocking tissue in the bark. A wedge, like this formed by Poria obliquua in paper birch, allows the fungus to spread to the outer side of wall 4, thus enlarging the wound and starting seesaw action between tree and fungus. The result is a perennial canker.
Image type: Museum
Image location: United States

Photographer Information

Name: USDA Forest Service - Northeastern Area Archive
Organization: USDA Forest Service
Country: United States

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Image Number: 1409078

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Image Citation:(?) USDA Forest Service - Northeastern Area Archive, USDA Forest Service, Bugwood.org

Node Affiliation: Bugwood - UGA

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Image uploaded on Monday, October 03, 2005
Image Information last updated on Friday, May 29, 2009