Figure 7 from: Lee BG, Hur J-S (2021) Two new lecanoroid lichen species from the forested wetlands of South Korea, with a key for Korean Protoparmeliopsis species. MycoKeys 84: 163-183. https://doi.org/10.3897/mycokeys.84.70798

Figure 7 Protoparmeliopsis crystalliniformis morphology (BDNA-L-0000349, holotype) A–C habitus and apothecia, areolate to squamulose thallus in white to whitish gray color D–E apothecia in vertical section F–G well-developed thalline margin H large crystals present in the thalline margin, not dissolving in KOH I clavate ascus J ascospores constantly simple and ellipsoid, often biguttulate in the beginning. Scale bars: 1 mm (A–C); 200 μm (D–E); 100 μm (F–G); 50 μm (H); 10 μm (I–J).