Template:Knudsen et al., 2011a
- Knudsen, K., Lendemer, J.C. & Harris, R.C. 2011. Studies in lichens and lichenicolous fungi – no 15: miscellaneous notes on species from eastern North America. Opuscula Philolichenum 9: 45–75. RLL List # 223 / Rec.# 32902 – Recent Literature on Lichens The New York Botanical Garden