Biological species of Armillaria in the mixedwood forest of northern Ontario

Abstract

The Armillaria complex of the mixedwood forest of northern Ontario is composed of four intersterile species. Single-spore isolates of these biological species were compatible with Anderson and Ullrich's biological species I (Armillariaobscura), III, V, and VII (Armillariabulbosa). Armillariaobscura and biological species V were the most common. Armillariamellea sensu stricto was not collected.