Template:Purvis & James, 1993

• Purvis, O.W. & James, P.W. 1993. Studies on the lichens of the Azores. Part 1 – Caldeira do Faial. Arquipélago: Ciências Biológicas e Marinhas 11A: 1–15. hdl: 10400.3/2131 . ResearchGate .  
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  • RLL List # 162 / Rec.# 15114 – Recent Literature on Lichens