Gyalideopsis mexicana , a new report for North America and a remarkable disjunction from Central America

摘要

Gyalideopsis mexicana , a morphologically unusual species in the lichen family Gomphillaceae, is reported from the Yukon Territory of Canada. The species was originally described from montane Chihuahua, Mexico. This report represents a remarkable disjunction and is the first report for North America north of Mexico. The first color illustrations of the species are also provided.