For the first time, the rare species Tricholoma borgsjoeënse and T. luridum are reported from the Czech Republic and Slovakia, respectively. Tricholoma borgsjoeënse, a species of the T. terreum group, is unique for its thick, distant and grey lamellae with a lilaceous tinge, dark grey pileus with a tomentose-squamulose surface, yellowing stipe base, and unusually large basidiospores and basidia. It was found in a man-made forest composed of Picea abies with admixed Pinus sylvestris. Tricholoma luridum, recognisable by its olive yellow-green tinges on the pileus, distinctly grey lamellae, uniformly ellipsoid, unusually large spores, and 4-spored basidia, was found in a Picea abies–Corylus avellana forest on calcareous soil. It is compared with T. guldeniae, its North European sibling. Notes on taxonomy, ecology and distribution of both species are added.
Holec J., Kříž M. (2012): Tricholoma borgsjoeënse found in the Czech Republic and Tricholoma luridum documented in Slovakia. – Czech Mycology 64(2): 223–232.
