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10-03-2026 18:08

Orange discs on Arctium
Marc Detollenaere Marc Detollenaere

Dear Forum,On stems of Arctium, I found some downy

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

07-03-2026 13:06

Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

Is this Diaporthe rudis?
François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

indian literature
Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

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Nectria sp. overgrowing Kretzchmaria
Esquivel-Rios Eduardo, 01-10-2012 03:37
Hi All.

Recently i found a Nectria (?) overgrowing Kretzschmaria ascostromas, may a Nectria expert can identificate this species. Thanks.
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Cesar Herrera, 01-10-2012 04:01
Re : Nectria sp. overgrowing Kretzchmaria
Hi, 

This is a Cosmospora species. This species belongs in a species complex (Cosmospora viliuscula species complex). Species in this complex are notorious for occurring on Xylariaceous fungi. I am currently working on a paper for this group. I can tell you in advance that it might be necessary to identify the Kretzschamaria species to key the Cosmospora to species rank. 


Cesar
Esquivel-Rios Eduardo, 01-10-2012 21:58
Re : Nectria sp. overgrowing Kretzchmaria
I think its K. deusta, but im post spore photos, for your opinion.
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Esquivel-Rios Eduardo, 01-10-2012 22:24
Re : Nectria sp. overgrowing Kretzchmaria
A common species of Cosmospora are reported in Costa Rica, near Panama, a Cosmospora vilior, looks the same fungi, wath do you think.?

http://darnis.inbio.ac.cr/ubisen/FMPro?-DB=UBIPUB.fp3&-lay=WebAll&-error=norec.html&-Format=detail.html&-Op=eq&id=5150&-Find
Cesar Herrera, 02-10-2012 00:54
Re : Nectria sp. overgrowing Kretzchmaria
This is probably a true Cosmospora viliuscula given the host. Cosmospora vilior is a name in the old literature that was used for this species complex. Hower, it was incorrectly applied because the type species of C. vilior occurs on an Eutypella species.