Lücking, Robert; Santesson, Rolf (2002). "On the identity of Pyrenotrichum 'atrocyaneum', P. 'mirum', and P. 'podosphaera', campylidia of lichenized Ascomycota (Lecanorales: Ectolechiaceae)". The Bryologist. 105 (1): 57–62. doi:10.1639/0007-2745(2002)105[0057:otiopa]2.0.co;2. S2CID85832957.
Lücking, Robert (2008). Foliicolous Lichenized Fungi. Flora Neotropica. Vol. 103. New York Botanical Garden Press. p. 732. ISSN0071-5794. JSTOR25660968.
Lücking, Robert; Santesson, Rolf (2002). "On the identity of Pyrenotrichum 'atrocyaneum', P. 'mirum', and P. 'podosphaera', campylidia of lichenized Ascomycota (Lecanorales: Ectolechiaceae)". The Bryologist. 105 (1): 57–62. doi:10.1639/0007-2745(2002)105[0057:otiopa]2.0.co;2. S2CID85832957.
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Lücking, Robert (2008). Foliicolous Lichenized Fungi. Flora Neotropica. Vol. 103. New York Botanical Garden Press. p. 732. ISSN0071-5794. JSTOR25660968.