27-11-2025 15:41
Thomas LæssøeSpores brownish, typically 4-celled; 26.8 x 2.4;
27-11-2025 12:01
Thomas Læssøehttps://svampe.databasen.org/observations/10496727
27-11-2025 11:46
Thomas Læssøehttps://svampe.databasen.org/observations/10493918
27-11-2025 11:31
Thomas LæssøeCollectors notes: Immersed ascomata, erumpent thro
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
25-11-2025 14:24
Thomas Læssøehttps://svampe.databasen.org/observations/10490522
26-11-2025 18:13
Jason Karakehian
The entire run of Mycotaxon is now available throu
25-11-2025 11:03
Mick PeerdemanHi all,One of my earliest microscopy attempts, so
Mold on Agaricus xanthodermus
Byrain,
18-11-2012 21:36
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.
David Malloch,
18-11-2012 22:33
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
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. :)
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 Mifsud,
24-07-2022 21:08
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!
David Malloch,
24-07-2022 22:09
Re : Mold on Agaricus xanthodermus
The Westerdyke Institute has changed since our conversations of 2012. These three papers should have the most up to date information:
Dave
Stephen Martin Mifsud,
25-07-2022 00:16
Re : Mold on Agaricus xanthodermus
Thank you David, greatly appreciated!
That's a massive contribution!
That's a massive contribution!