C. Printzen and B. McCune 2007: Trapeliopsis. - In: T. H. Nash, III, C. Gries and F. Bungartz: Lichen Flora of the Greater Sonoran Desert Region. Volume 3. . Lichens Unlimited, Arizona State University, Tempe pp. 398-399. [RLL List # 210 / Rec.# 30279] Keywords: SONORAN DESERT/ UNITED STATES/ MEXICO/ TRAPELIOPSIS/ KEY
Abstract: [1 additional species; key.]