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Mot de passe perdu? S'inscrire

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

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Mold on Agaricus xanthodermus
Byrain, 18-11-2012 21:36
I found this mold growing on a old and dried out Agaricus xanthodermus in CA, USA on 10-28-2012.  Could this be a Trichoderma?  And can anyone id it to species with the information avaiable?  If not, what other information could help?  I'm very new to working with these things, thanks for looking. :)

The conidia possibly had faint ornamention, as did sections of the hyphae, the conidia was 3 - 4 um and the average was 3.05.  No clamps or reaction with melzers were observed.
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David Malloch, 18-11-2012 22:33
David Malloch
Re : Mold on Agaricus xanthodermus
Good evening,

This looks like a species of Penicillium to me.  Penicillium brevicompactum commonly grows on defunct agarics but has smooth conidiophores, unlike the roughened ones in your material, which remind me more of P. aurantiogriseum.  It seems to be a member of the sugbenus Penicillium, which is thoroughly monographed by Samson & Frisvad http://www.cbs.knaw.nl/publications/CBSPublicationDetails.aspx?Rec=1049?.

Dave

Byrain, 18-11-2012 23:15
Re : Mold on Agaricus xanthodermus
Hi,

Thank you for the information and for the amazing link, I looked quickly at the pdfs, but much of it went over my head.  It will take some time to study them enough to attempt an identification, especially since I do not currently have the skills or materials to make a culture or many of the chemicals that seem to make the identification process easier. :)
Stephen Martin, 24-07-2022 21:08
Stephen Martin
Re : Mold on Agaricus xanthodermus
I would like a copy of this publication - the URL has been changed since then. I am working on a similar Penicillium. Thanks!
Stephen Martin, 25-07-2022 00:16
Stephen Martin
Re : Mold on Agaricus xanthodermus
Thank you David, greatly appreciated!

That's a massive contribution!