Morphology and anatomy of Glaucotrema thailandicum (A–E) A–B habitat of ascoma C cross-section of ascoma show whitish and reticulate columella D asci with spores and E submuriform ascospores (holotype), Ocellularia klinhomii (F–K) F–G ascomata immersed in verrucae and surrounded by a black ring H cross-section of ascoma with carbonized columella and apically carbonized exiple I–K ascus and ascospores (holotype). Scale bar A–B, F–G = 1 mm, H = 100 µm, C–D, I = 50 µm, E, J–K = 20 µm.