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A canker on the main stem of oppressed western hemlock (Tsuga hetero hylla (Rafn.) Sarg.), 1 to 3 inches in diameter at breast height, was found at Powell River and Tumour Island, British Columbia. The canker is irregularly elliptical, with a conspicuous resin exudation in the early stages. The canker appears to be annual. A species of Cephalosporium (Fungi Imperfecti, Moniliales) was consistently isolated from cankers collected at Powell River. The pathogenicity of the organism has not beendoi:10.14288/1.0106594 fatcat:nqstrqikuvcghcfvu3wf7ur4ni