Template:Hale, 1971i

• Hale, M.E., Jr. 1971. Studies on Parmelia subgenus Xanthoparmelia (Lichenes) in South Africa. Botaniska Notiser 124(3): 343–354. Lund University (Online)  
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  • RLL List # 82 / Rec.# 7447 – Recent Literature on Lichens