Thomson, JW 1993: A key to Xanthoparmelia in North America, extracted from the world keys of Hale 1990. - The Bryologist96(3): 342-344. [RLL List # 153 / Rec.# 18507] Keywords: NORTH AMERICA/ XANTHOPARMELIA
Abstract: [A key to the 55 species occurring in North America (including Mexico).]