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Gyrotrema papillatum Lücking
Nomenclature
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Family: ThelotremataceaeGenus: Gyrotrema
Media
SUMMARY
Mycobank MB 517779
Thallus grey-green to olive-green, with numerous white papillae, with dense, prosoplectenchymatous cortex; photobiont layer and/or medulla with clusters of calcium oxalate crystals. Apothecia erumpent, rounded to lobate, 1–1–5 mm diam.; disc exposed, cinnabar-red; margin lobulate to recurved, fused, cinnabar-red inside. Columella absent but concentric rings of excipular tissue separating rings of old hymenia, with youngest hymenium ring next to margin. Excipulum prosoplectenchymatous, carbonized; periphysoids absent. Hymenium 80–100 µm high; paraphyses unbranched. Ascospores 8/ascus, 5–9-septate, 25–30 x 6–8 µm, ellipsoid, with thick septa and lens-shaped lumina, colourless, I+ violet-blue (amyloid). Secondary chemistry: apothecial disc with unidentified anthraquinone.