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- Lecidea degelii H. Magn., in Degelius, (1942)
- Lendemer & Harris, Castanea 109 (2014)
- Lendemer, J.C. and Harris, R.C. 2014: Studies in lichens and lichenicolous fungi - No. 18: resolution of three names introduced by Degelius and Magnusson based on material from the Great Smoky Mountains. - Castanea 79(2): 106–117. [RLL List # 236 / Rec.# 35627] (Lichen Database) (Abstract)
- North American Lichen Checklist, Version (#20) 19 April 2015.
- Porpidia degelii in Index Fungorum.
- Porpidia degelii in MycoBank.