Asterothyrium microsporum R. Sant.



Felix Schumm - CC BY-SA 4.0
[ABL28046], Brazil, Santa Catarina, Sao Francisco do Sul, Forte Marechal Luz, on leaving leaves. 26°09'59'' S, 48°31'52'' W, 60 m. Leg. M. Cáceres & A. Aptroot (no 28046), 10 October 2015, det. A. Aptroot 2015. - Apothecia immersed in the thallus, erumpent, 0.15-0.35 mm, disc yellow to grey, non pruinose. Excipulum paraplectenchymatous, uncoloured, I+ red. Paraphyses simple, c. 1 μm thick, with clavate apices. Spores 8/ascus, uniseriate, 1-septate, fusiform to ellipsoid, 8-10 x 2-3 μm.