Gremmeniella abietina - Scleroderris Canker

Scleroderris Canker - infection starts at the tip of the branch - Canadian Forest Service
There are two distinct races of scleroderris canker in North America; the North American race which infects mainly pine (Pinus spp.) and occasionally spruce (Picea spp.) and the more virulent European race which infects pine (Pinus spp.), larch (Larix spp.), spruce (Picea spp.) and fir (Abies spp.)

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