Canadian Forest Service Publications
Field evaluation of ecological differentiation of dwarf mistletoe on shore pine and western hemlock. 1976. Smith, R.B.; Wass, E.F. Canadian Journal of Forest Research 6(2): 225-228.
Issued by: Pacific Forestry Centre
Catalog ID: 1750
Available from the Journal's Web site. †
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Hemloclc dwarf mistletoe (Arcenthobiiuntsugense (Rosend.) G. N. Jones) principally infects western hemlock (Tsugaheteropliylla (Raf.) Sarg.), but it is also damaging to shore pine (Pinuscontorta Dougl. ex Loud.) growing in coastal British Columbia. Stands of varied composition were studied in the Home Lake area of Vancouver Island to compare the levels of infection in shore pine and western hemlock. Infection of shore pine occurred whether or not infected hemlock trees were present in the stand. Observations and measurements from these field studies support indications from earlier artificial inoculation trials that two ecological races of A. tsugense exist.