Melanelia stygia specimens treated A M. stygia, AMNH 28243 (Iceland) B M. stygia, AMNH 16894 (Iceland) C M. stygia, C 19893 (Greenland) D M. stygia, C 19893 (Greenland) E M. stygia, Szczepańska 1160, WRSL (Poland) F M. stygia, Szczepańska 737, WRSL (Austria). Scale bars: 0.5 cm (A, C, E);1 mm (B, D); 0.5 mm (F).

 
 
  Part of: Szczepańska K, Guzow-Krzemińska B, Urbaniak J (2021) Infraspecific variation of some brown Parmeliae (in Poland) – a comparison of ITS rDNA and non-molecular characters. MycoKeys 85: 127-160. https://doi.org/10.3897/mycokeys.85.70552