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24-04-2026 03:16

Trinacrium robustum?
David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 20:17

Pseudaegerita spec.
Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

Fungus sp
François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Peziza
Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

22-04-2026 19:12

Poilu, violet avec KOH
Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Hymenoscyphus sp
Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

22-04-2026 01:06

Neonectria ou thelonectria ?
Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

21-04-2026 13:36

Wentiomyces-like on Salix
Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Lophodermium on Typha
Gernot Friebes

Hi,this Lophodermium on Typha has ascospores measu

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Coprophilous Bionectriaceae?
Björn Wergen, 05-02-2013 14:33
Björn WergenHi there,

I have recently found another small pyrenomycete growing on dung of a dung pile, precisely on dead grass culms which are embedded in that dung. It has very small fruitbodies from about 0,08 mm diameter and some rigid hairs, which are 35-45µm long. Spores are 8-9x2,-3,2µm, with one central septation when mature, hyaline, smooth. Asci with 8 spores (uni/biseriate), 50-65x6-8µm, IKI -, but with visible apical apparatus. Paraphyses not seen. Wall 6-10mm thick, consisting of small polygonal cells, redbrown.

Any idea? I thought about a Bionectriaceae, but I did not find any matching species.

regards,
björn
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Björn Wergen, 05-02-2013 21:03
Björn Wergen
Re : Coprophilous Bionectriaceae?
Probably a member of Niesslia is also possible...

By the way: does anybody know about a key for that genus? I am looking for it but without success.
Alain GARDIENNET, 05-02-2013 22:35
Alain GARDIENNET
Re : Coprophilous Bionectriaceae?
Hi Björn,
Did you test KOH ? It recalls me some Nectriella. Niesslia are darker (brown to black).

Alain
Björn Wergen, 06-02-2013 00:12
Björn Wergen
Re : Coprophilous Bionectriaceae?
Hi Alain,

what does KOH do with Nectriella? I will test this tomorrow.

regards björn
Alain GARDIENNET, 06-02-2013 08:00
Alain GARDIENNET
Re : Coprophilous Bionectriaceae?
Nectriella is (as a Bionectriaceae) KOH -. A positive reaction would signify that is Nectriaceae.
Your one seems to be closed to species like N. dakotensis.
Alain
Björn Wergen, 06-02-2013 21:50
Björn Wergen
Re : Coprophilous Bionectriaceae?
Hi Alain,

I have read the article about Hypocreales (Rossman et al., Studies in Mycology 42) and after using the key, I think this should really be N. dakotensis. This is quiet interesting.

Of course I will test KOH too.

Thanks again, Alain.

regards,
björn