Pyrenodesmia rugosa (BDNA-L-0001102, holotype) in morphology A–C habitus and apothecia. Rugose thallus brown with orange spots and without pruina, but black apothecia often white pruinose D–E zeorine apothecia with well-developed parathecium. Algal layers continue to the base and underlying the hypothecium F epihymenium K+ purple and tiny granules not dissolving in K G–K asci oblong to narrowly clavate with eight spores K in the lactophenol cotton blue L ascospores simple in the beginning and developed polarilocular at maturity M paraphyses anastomosing in lactophenol cotton blue. Paraphysis tips slightly swollen. Scale bars: 1 mm (A–C); 100 μm (D); 50 μm (E, F); 10 μm (G–M).

  Part of: Lee BG, Hur J-S (2021) Two new calcicolous caloplacoid lichens from South Korea, with a taxonomic key to the species of Huriella and Squamulea. MycoKeys 84: 35-55.