Accès membres

Mot de passe perdu? S'inscrire

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

« < 1 2 3 4 5 > »
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

  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
  • message #71653
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