
05-07-2025 12:38
Åge OterhalsI found this pyrenomycetous fungi in pine forest o

02-07-2025 18:45
Elisabeth StöckliBonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12
Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33
Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00
Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43
me mandan el material seco de Galicia (España)

03-07-2025 18:40
me mandas el material seco de Galicia (España) re

Ascomata: Sphaerical; 366 um in diameter with a short neck 65 um wide & 34 um high.
Asci: 8-spored; 53-8-54.2 (-59.8)x21.6-24.8 (-28.4) um
Spores: biseriate; (13.4-)17.4-20.4x(13.2-)14.2-15.7x10.5-12.3 um; at first when immature sphaerical, becoming ellipsoidal and finally citriform with apiculate germ pores.
In contrast with the publication of Garcia the measurement of the ascomata is more than indicated and there was no report about the presence of a short neck (photo-8), not the best example but measurements are correct.
Photo-2 shows a spore release through the neck of the ascomata.
Reference:
Dania García, Alberto M. Stchigel, and Josep Guarro (2004) Two new species of Sphaerodes from Spanish soils; Studies in mycology 50: 65-66
X.W. Wang, F.Y. Bai, K. Bensch, M. Meijer, B.D. Sun, Y.F. Han, P.W. Crous, R.A. Samson, F.Y. Yang, and J. Houbraken (2019) Phylogenetic re-evaluation of Thielavia with the introduction of a new family Podosporaceae. Studies in mycology 93: fig. 9.
Yasmina Marin-Felix, Josep Guarro, José F. Cano-Lira, Dania García, Andrew N. Miller, Alberto M. Stchigel (2018) Melanospora (Sordariomycetes, Ascomycota) and its relatives Mycokeys 44: 114 & 109
Joop


Thanks for the reply I overlooked the fact of the ostiole and besides that the size of the ascomata is too big.
I have been looking for possibilities with ascomata having ostioles and a bigger size plus citriform spores and for that I ended up with Mi. marchicum.
According to Lindau (1886) and Saccardo (1899) the size of the ascomata and spores for Mi. marchicum are smaller, so no similarity.
It still may be a Microthecium species in my opinion but question is if it makes a diffecrence that the appearance of these species is mainly on soil and my finding was on dung.
Joop