NABS I, V, VII, IX, X, and XI have been found in British Columbia; I, III, V have been found in the Prairie Provinces, with I and V occurring in both the boreal and subalpine regions; I, III, V, and VII have been found in Ontario; and I, II, III, V, and VI have been found in Quebec. "Armillaria ostoyae" is the species most commonly found in all Canadian provinces surveyed (Mallett 1990). "Armillaria" root rot occurs in the Northwest Territories, and was identified on white spruce at Pine Point on Great Slave Lake prior to NABS findings.