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02-05-2025 10:16

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

12-05-2025 18:52

Gonzalez Garcia Marta

Buenas tardes, estoy estudiando un hongo peritecio

12-05-2025 18:25

Thomas Flammer

Substrate rabbitSpores: 12-13 µm x 6-7 µmParaph

10-05-2025 18:47

David Chapados David Chapados

Hi, Does anyone have an idea of what this could b

11-05-2025 17:57

Louis DENY

Hello forumTrouvé dans les environs de Belfort,al

08-05-2025 20:50

Andreas Jacob

Good evening, due to contstant drought I started

11-05-2025 10:22

Karl Soler Kinnerbäck

Found on moist Betula wood dipped in freshwater st

11-05-2025 10:35

ruiz Jose

Hola, en excremento de jabali, tamaño de unos 2 m

05-05-2025 10:09

Nicolas Suberbielle Nicolas Suberbielle

Re-bonjour,Cet ascomycète trouvé et étudié par

09-05-2025 16:01

Thomas Flammer

I found a black cushon which might eventually be 

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Coprotus? Need help
Björn Wergen, 15-11-2010 13:11
Björn WergenSalut,

in the last days I have collected some dung from various animals (cow, horse...) to culture some coprophilous ascomycota. I have 10 different species now, but with the 11. one I have some problems with determination. Perhaps you can help me ;)

Fruitbody 0,08-0,2 mm, discoidal with protuding asci, first pale ochraceous-yellow, later darker, ochraceous to pale brown.
Spores 8,4-10,1 x 4,2-4,5 µm, ellipsoid with rounded ends, smooth, hyaline, with a DeBary-Bubble (only seen under x1000 with immersion and very good eyes :D ), glued to a cluster, also after leaving ascus, Cluster 26-30 x 8,6 - 8,9 µm.
Asci claviforme, very short stalked, hyalin, with 8 spores and an irregular biseriat arrangement (glued together).
Paraphyses 1,4-1,6 µm, apical strongly swollen up to 5-6 µm, with paly yellowish pigment, smooth.

Found on cow-dung together with Cheilymenia granulata.

It seems as if there is a Coprotus with hyalin, saccoboloid spores...can that be?? Anyway, hope you can give me some hints ;)

Thanks a lot and cheers,
Kazuya
  • message #13351
Björn Wergen, 15-11-2010 13:12
Björn Wergen
Re:Coprotus? Need help
mikro1
  • message #13352
Björn Wergen, 15-11-2010 13:12
Björn Wergen
Re:Coprotus? Need help
mikro2
  • message #13353
Hans-Otto Baral, 15-11-2010 13:36
Hans-Otto Baral
Re:Coprotus? Need help
Dear Kazuya

I imagine that your fungus s Thelebolus microsporus. Typical is that the spores glue together after discharge. Also there is no operculum, and the species is more close to the Helotiales (Thelebolaceae). There is a gluing substance which stains bright red in Congo (CR).

I had a fresh collection on sheep dung, with ssci *60-80 x 11-12.5 µm, with croziers, IKI-, +H2O mostly with apical thickening with apical chamber, opening by a split, no operculum. Sp. 8-9.5 x 4.5-4.8 µm.

There are no DBS. What you saw is the nucleus. Did you mount it fresh in water? Then maybe you see the greenish-yellow VBs in the paraphyses.

Good luck!
Zotto
  • message #13354
Björn Wergen, 15-11-2010 14:08
Björn Wergen
Re:Coprotus? Need help
Hi Zotto,

many thanks for help, I've also thought about T. microsporus, but I had never seen this one with that glued spores ;)

I will try it with CR next time. I have also seen paraphyses with this yellow pigment, fresh in water of course.

I will take a second look on this species. It's very very interesting for me ;)

Cheers,
Kazuya
Nicolas VAN VOOREN, 16-11-2010 08:44
Nicolas VAN VOOREN
Re:Coprotus? Need help
Yes, this a very interesting species, also found this year on sheep dung.
  • message #13369