Abstract
Twenty-nine species of vascular plants commonly occurring in the Boreal Forest Region of northeastern Ontario were examined for the presence of mycorrhizae. Four species were ectomycontiizal, 4 both endo- and ecto-mycorrhizal, and 15 endomycorrhizal. Among the Ericaceae, one had arbutoid mycorrhizae and five ericoid mycorrhizae. The distribution of Cenococcum geophilum among the ectomycorrhizal and arbutoid plants is compared. Selected findings are discussed in relation to reports in the literature.

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