Maximum likelihood tree of the OLICH sequences of Cetrelia, with selected ITS sequences from Mark et al. (2019).

 
  Part of: Marthinsen G, Rui S, Timdal E (2019) OLICH: A reference library of DNA barcodes for Nordic lichens. Biodiversity Data Journal 7: e36252. https://doi.org/10.3897/BDJ.7.e36252