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10-09-2025 17:18

Pseudocoprotus catenipilus ???
Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

dark- and small-spored Sordariomycetes on Fraxinus - Denmark
Thomas Læssøe

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

10-09-2025 23:53

Strickeria kochii?
Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

07-09-2025 08:19

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Trichobolus
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

Hymenoscyphus sp
ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Vibrissea filisporia f. boudieri
Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

06-09-2025 21:40

Pyrenomycetes
David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Hymenoscyphus vacini
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

05-09-2025 09:32

Herbier J. Häffner ?
Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour, hi everyone,Do you know where the fungari

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Patellaria atrata ou Claussenomyces atrovirens ??
Bernard CLESSE, 09-02-2020 20:39
Bernard CLESSESur tronc mort et décortiqué de chêne en ambiance humide.

Je pensais à Patellaria atrata mais Raul Tena Lahoz propose Claussenomyces atrovirens, que je ne connaissais pas. 

Pourriez-vous donner votre avis et me dire quelle est la différence entre ces deux taxons ?

Grand merci d'avance !

Bernard
  • message #61439
  • message #61439
  • message #61439
Hans-Otto Baral, 09-02-2020 20:45
Hans-Otto Baral
Re : Patellaria atrata ou Claussenomyces atrovirens ??
Thsi difference is huge: Patellaria forms septate spores with a high oil content that are ejected as such. Clauss. atrovirens and related species forms septate spores with low oil content (see your photo) and these spores germinate inside the immature asci to form numerous minute conidia. The conidia aggregate in balls, see your photo. The balls are ejected. Some conidia are floating in your preparation. they are rod-shaped and also the possible absence of longisepta in the ascospores (only cross-septa) point against atrovirens.

A difficult genus with some undescribed species. Look in my folde and compare e.g. C. munathinus and C. xylophilus.

The genus stands in the Phacidiales, Tympanidaceae.
Raúl Tena Lahoz, 09-02-2020 20:59
Raúl Tena Lahoz
Re : Patellaria atrata ou Claussenomyces atrovirens ??
In fact, my anwser to Bernard was to draw his attention to Claussenomyces... I didn't try to get deeper in this difficult genus.
Cheers,
Raúl
Bernard CLESSE, 09-02-2020 21:22
Bernard CLESSE
Re : Patellaria atrata ou Claussenomyces atrovirens ??
Great thanks Peter, Raul and Zotto !!

I learned a lot of new things again! What an extraordinary forum!


And sorry to have generated two discussions instead of one (a handling error!)


Bernard