Canadian Forest Service Publications

Natural infection of two new hosts by hemlock dwarf mistletoe in British Columbia. 1978. Hunt, R.S.; Smith, R.B. Canadian Plant Disease Survey 58(2): 31-32.

Year: 1978

Issued by: Pacific Forestry Centre

Catalog ID: 1890

Language: English

Availability: PDF (request by e-mail)

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The dwarf mistletoe, Arceughobium tsugense, exists as two pathotypes in British Columbia: one primarily infects western hemlock (Tsuga heterophylla), the other shore pine (Pinus contorta var. contorta). This is the first report of natural occurrence of either pathotypes on Douglas-fir (Pseudotsuga menziesii) and the first of the hemlock dwarf mistletoe pathotype on western white pine (Pinus montricola) north of Oregon.