Template:Hale, 1981b
- Hale, M.E., Jr. 1981. Pseudocyphellae and Pored Epicortex in the Parmeliaceae: Their Delimitation and Evolutionary Significance. The Lichenologist 13(1): 1–10. RLL List # 109-29 / Rec.# 7365 – Recent Literature on Lichens DOI: 10.1017/S0024282981000030