. The Canadian field-naturalist. A Survey of Some Perennial Vascular Plant Species Native to Alberta for Occurrence of Mycorrhizal Fungi Randolph S. Currah and Margaret Van Dyk University of Alberta, Devonian Botanic Garden, Edmonton, Alberta T6G 2E1 Currah, Randolph S., and Margaret Van Dyk. 1986. Asurvey of some perennial vascular plant species native to Alberta for occurrence of mycorrhizal fungi. Canadian Field-NaturaHst 100(3): 330-342. Observations on mycorrhizal and other root-associated fungi are presented for 179 native vascular plant species collected from short grass prairie, parkla
. The Canadian field-naturalist. A Survey of Some Perennial Vascular Plant Species Native to Alberta for Occurrence of Mycorrhizal Fungi Randolph S. Currah and Margaret Van Dyk University of Alberta, Devonian Botanic Garden, Edmonton, Alberta T6G 2E1 Currah, Randolph S., and Margaret Van Dyk. 1986. Asurvey of some perennial vascular plant species native to Alberta for occurrence of mycorrhizal fungi. Canadian Field-NaturaHst 100(3): 330-342. Observations on mycorrhizal and other root-associated fungi are presented for 179 native vascular plant species collected from short grass prairie, parkland, montane, alpine, and boreal forest ecoregions of Alberta. Four types of root-associated fungi were recognized: vesicular arbuscular mycorrhizal fungi (VAM), dematiaceous fungi which formed extensive nets on the surfaces of roots (DSF), orchidaceous fungi found within the root cortical cells of Orchidaceae, and arbutoid mycorrhizal fungi. The majority of non-orchid species had VAM. Some plant families (Cruciferae, Chenopodiaceae, Equisetaceae) and most hydrophytes lacked root-associated fungi of any kind. Hemiparasitic Scrophulariaceae lacked VAM but some had DSF. Most alpine species displayed minimal infection by VAM but had well-developed DSF. Some perennial species of reputedly non-mycorrhizal families (Polygonaceae, Caryophyllaceae) demonstrated well-developed VAM associations. Key Words: Mycorrhizal fungi, root-associated fungi, perennial, non-arborescent vascular plants, symbiosis. Alberta. Records of the occurrence of mycorrhizal and other root-associated fungi in native plants of Canada have been made for some ferns and fern allies of southern Ontario (Berch and Kendrick 1982) and for some species of the boreal forest of northeastern Ontario (Malloch and Malloch 1981, 1982). There are few references to the occurrence of mycorrhizae in perennial, non-arborescent, vascular plant species of western Canada (Currah et al. 1982, 1983). For species of economic importance, M
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