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20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

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

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What can this be?
Piet BORMANS, 15-08-2012 11:56
Piet BORMANSIt looks a little bit like Acanthophiobolus helicosporus but it does not correspond with the spores.
Ascomata: spherical 180 µm
Setae: black - 35 - 80 µm. Straight or slightly curved
Asci: 70 - 85 x 10 - 12 µm
Ascospores: filiform, 45 - 75 x 2 - 3 µm
Substrat: Calamagrostis epigejos

Thanks for your response
Piet Bormans
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Martin Bemmann, 15-08-2012 22:07
Martin Bemmann
Re : What can this be?
Hi Piet,

it reminds me on Chaetosphaeria spinosa. Maybe Andy and/or Sabine see your posting and comment...
A description of Ch.sp. is attached.

Cheers

Martin
Andrew N. Miller, 16-08-2012 16:16
Andrew N. Miller
Re : What can this be?
I'm trying to determine from the photos if the asci are unitunicate or bitunicate.  If the latter, then I'm thinking this might be Acanthostigma scopulum.

Best,
Andy
Martin Bemmann, 16-08-2012 19:44
Martin Bemmann
Re : What can this be?
Hi Andy,

I would tend to see bitunicate asci (attached detail of Piet's photograph). At any rate no thin walled (unitunicate) as in Chaetospharia spinosa.
You are certainly right with Acanthostigma scopulum.

Best regards

Martin
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Bernard Declercq, 16-08-2012 20:06
Bernard Declercq
Re : What can this be?
Hi Andy,

We excluded Acanthostigma as we thought this adjacent genus was lignicolous. Does Acanthostigma occurs on monocotyls?

Best regards,
Bernard
Andrew N. Miller, 16-08-2012 21:01
Andrew N. Miller
Re : What can this be?
I really do not know, but I suspect that many saprobic pyrenos and loculos are not that substrate specific.  I have even found Cercophora scortea on wood in USA, although it is known from dung in Europe.

Andy
Jaklitsch Walter, 17-08-2012 11:09
Re : What can this be?
what about Taphrophila (Acanthostigmina, Ophiobolus, Tubeufia) trichella? This fungus occurs on graminaceous hosts. How many septa do the spores have?

Walter
Bernard Declercq, 17-08-2012 13:30
Bernard Declercq
Re : What can this be?
Dear Walter,

Excellent proposal. Taphrophila trichella was described by the belgian mycologists Bommer & Rousseau who collected it on Ammophila at the Belgian coast. And Calamagrostis is mentioned in literature as another substrate. It would be great to have collected this species once again in our country after more than 120 years.
Allez Piet, check the number of septa. We did not see coiled ascospores in the ascus but that is maybe not that important.

Bernard
Piet BORMANS, 17-08-2012 19:01
Piet BORMANS
Re : What can this be?
Dear all,

I have tried to take a photo, to show you the number of septa. I counted from 6 to 9 septa. It was not easy for me. I am still looking for the ideal method. Here is the result.

Best regards,
Piet
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Jaklitsch Walter, 17-08-2012 22:45
Re : What can this be?
in this case it may be Taphrophila hebridensis (Dennis) Réblová & M.E. Barr

Cheers,
Walter
Piet BORMANS, 18-08-2012 12:31
Piet BORMANS
Re : What can this be?
Thanks to Martin, Andrew, Bernard and Walter. Your help is a step forward for me. Thank you.

Best regards
Piet