Hale, ME", Jr/ Culberson, WL 1960: A second checklist of the lichens of the continental United States and Canada. - The Bryologist63(3): 137-172. [RLL List # 37 / Rec.# 7368] Keywords: CHECKLIST/ NORTH AMERICA/ CANADA/ USA
Abstract: 2492 species in 196 genera. Reprints are available from Dr. L. E. Anderson, Dept. of Botany, Duke University, Durham, NC for $1.00.]