A new variety of Phellinuspini associated with cankers and decay in white firs in southwestern Oregon and northern California

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Abstract
P. pini var. cancriformans var. nov. newly described, is a causal agent of cankers and limited stem decay in white firs [Abies concolor] in southern Oregon and northern California [USA]. Merchantable losses attributed to the effect of this fungus are estimated to be 13% of the standing volume. Of the trees surveyed, 16% had large visible cankers.