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Fifty-six species in the Trichocomaceae were recovered from bark of trees and shrubs from hot arid and temperate regions, and following one fire in a temperate region of Australia. Fungi were recovered from dry bark after incubation for up to 1 h at up to 105 degrees C. Fourteen species also regenerated on agar after their conidia were heated for 1 h at 105 degrees C. Anamorphic species were commonly recovered and widespread. Teleomorphic species were only recovered after heating the bark. In addition, anamorphic fungi were recovered from one plant species following a natural fire. The results support the view that both anamorphic and teleomorphic fungi may tolerate extreme temperatures in their environment while dry.