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15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

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Microthecium tenuissimum?
Joop van der Lee, 30-01-2022 12:54
Joop van der LeeFound on horse dung.

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

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Norbert Heine, 30-01-2022 20:58
Norbert Heine
Re : Microthecium tenuissimum?
Hello Joop, I don't know the species you show.

But in my opinion this is not Microthecium tenuissimum. This has to be non-ostiolate, while you show a clear neck. Compare with Garcia et al., 2004, p. 65.

Norbert
Joop van der Lee, 01-02-2022 07:27
Joop van der Lee
Re : Microthecium tenuissimum?
Hello Norbert,

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