B. McCune and S. Altermann 2009: Letharia gracilis (Parmeliaceae), a new species from California and Oregon. - The Bryologist112(2): 375-378. [RLL List # 215 / Rec.# 31231] Keywords: NEW TAXA/ LETHARIA/ CALIFORNIA/ OREGON
Abstract: [New: Letharia gracilis Kroken ex McCune & Altermann sp. nov. (Oregon and California).]