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25-03-2026 15:06

Hyaloscypha albohyalina à confirmer
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

25-03-2026 13:54

Litterature on Eutypa
Enrique Rubio Enrique Rubio

Does anyone know where I could download the work b

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

24-03-2026 19:59

Sclerotinia binucleata?
William Slosse William Slosse

Hello everyone,On 23/03/26, I found the following

21-03-2026 15:13

MYXOMYCETICOLOUS FUNGI
Lepista Zacarias

Hello everyone, Does any one know of any literatu

24-03-2026 21:37

Helminthosphaeria
Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

24-03-2026 21:07

Eupezizella aureliella ?
Ethan Crenson

Hello all, A friend collected this asco in a wood

23-03-2026 20:16

Coprotus 210226 315
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

24-03-2026 15:44

Leptodontidium cf. trabinellum
Åge Oterhals

I hope someone can confirm the name of this collec

24-03-2026 11:58

Una para ID
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, recolectado en c

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Podospora excentrica
Chris Yeates, 08-10-2021 17:19
Chris Yeates
Bonjour tous

A recent collection of dung from mountain hare Lepus timidus was seen to have a perithecium of this species even before incubation commenced. Examination with Nomarski DIC gave an opportunity to look for the gelatinous appendages normally invisible without indian ink (which was later used to double-check the identification). The perithecium only contained asci at various stages of immaturity, some old collapsed spores and numerous fully mature ones no longer in their asci.

So these images show the latter, as well as a couple of submature spores which show the asymmetry well. I thought fellow copromycologists might be interested. As you can see with DIC the apical appendage shows quite well as a sort of gel sheath, with a definite margin - hard to see in indian ink mounts which are of necessity more diffuse. I was not able to distinguish the basal appendages with this technique, perhaps because the spores were not fresh out of the asci.

Another feature I noticed - though forgot to photograph - was that the pedicels were consistently of a distinctive shape. Unlike the simply rounded club-like pedicels one generally sees in Podospora these had a rather "pinched out" apex, a little like a teat.

Amitiés, Chris
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Michel Delpont, 08-10-2021 18:45
Michel Delpont
Re : Podospora excentrica
Bonsoir Chris!

Indeed the shape of the spores and their pedicels of your harvest make one think of exentrica. Have you been able to observe the hairs at the top of the perithecium and measure the size of the spores?


Amitiés.


Michel.

Chris Yeates, 08-10-2021 19:26
Chris Yeates
Re : Podospora excentrica
Bonsoir Michel

Yes tufts of hairs like these, and some much longer, spore size 33.2-38 x 18.2-20.5µm. Appendages also checked in indian ink.

Amitiés, Chris
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Michel Delpont, 08-10-2021 20:15
Michel Delpont
Re : Podospora excentrica
The size of the spores is in the upper range (especially the width), the hairs as well as the slightly exentricated germ pore lead to P.exentrica.

Michel.


Chris Yeates, 08-10-2021 20:36
Chris Yeates
Re : Podospora excentrica
Thanks

Lundqvist in Nordic Sordariaceae gives much wider spore measurements (18-24µm). I've noticed on other occasions that his measurements can differ from other authors. Doveri gives a Qe of 1.89, mine was 1.9; so yes I'm happy with the identification.

Chris
Norbert Heine, 08-10-2021 23:12
Norbert Heine
Re : Podospora excentrica
Great Found, Chris!

In my opinion this is a rare species. You should compare with this nice documentation.


Norbert