Psilolechia clavulifera, a lichen species new to Canada

Abstract

Psilolechia clavulifera is reported as new to Canada, where it was been found growing under a shaded rock overhang near Temagami, Ontario. This is the first record of the species for Canada. This occurrence represents only the fourth documented record of the species for North America since it was first discovered in 1939 by J. Lowe. This specimen was found growing with other rarely collected cryptic species found in unique microhabitats: Psilolechia lucida, Protothelenella corrosa, and Microcalicium arenarium.