Rough bark of alder

Rough bark of alder - Canker caused by <em>Didymosphaeria oregonensis</em> on red alder
  • Latin name: Didymosphaeria oregonensis Goodd.
  • French name: Chancre didymosphérien de l'aulne
  • Division: Ascomycota
  • Class: Pleosporales




Western Canada

Damage, symptoms and biology

The presence of this fungus appears to have little effect on the health or productivity of alder trees. Young trees are occasionally deformed and/or stunted when numerous cankers are present.

Other information

The infection of alder by Didymosphaeria oregonensis is thought to be restricted to young trees, and the cankers cease to grow after the bark thickens with age. The rough bark remains, however, on the trunks of mature trees.

Canadian Forest Service Publications

Rough bark of alder

Information on host(s)

Main host(s)

Alders, mountain alder, red alder, Sitka alder, speckled alder

  • Rough bark of alder Canker caused by Didymosphaeria oregonensis on red alder
    Eric Allen
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