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01-05-2025 21:07

Isabelle Charissou

Bonjour, j'aimerais pouvoir consulter l'article s

01-05-2025 20:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, today I have collected a tiny ascomycete g

30-04-2025 18:57

Zoe Vélez Zoe Vélez

Hello Forum, excuse me, do you think these could b

30-04-2025 01:29

David Chapados David Chapados

Hi, I found Dactylellina candida/candidum, recent

25-04-2025 09:33

Josep Torres Josep Torres

Ascomata shaped like deformed black grains, measur

01-05-2025 11:25

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

01-05-2025 09:59

Illescas Tomás Illescas Tomás

Bonjour à tous : Je joins des photos macro et mi

29-04-2025 09:13

Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

28-04-2025 12:51

Thomas Flammer

Substrate: Angelica sylvesrisSpore mass: 8.4 - 11.

12-05-2013 13:31

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Dear mycologists,could someone give me an advice a

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Orbilia sp. similar to O. pseudoaristata?
Francois Guay, 23-04-2025 19:58
Francois GuayI found this interesting Orbilia sp. one year ago in Quebec, Canada, growing on deciduous wood. I haven’t identified it to species yet, and I was wondering if the microscopy I did back then is enough to do so.
 

Substrate: deciduous wood

-Spore 9.53–12.83 × 2.03–3.09 µm

-Asci IKI–

Here’s the link to the photos: https://www.inaturalist.ca/observations/214881781

Thanks for your help!

François
Hans-Otto Baral, 23-04-2025 21:12
Hans-Otto Baral
Re : Orbilia sp. similar to O. pseudoaristata?
The substrate is clearly bark, not wood, but you may have used the word to cover both.

The apical thickening is very prominent, so O. pseudoaristata is excluded. The spores resemble O. clavuliformis, or maybe O. clavuliaristata.
Francois Guay, 23-04-2025 21:37
Francois Guay
Re : Orbilia sp. similar to O. pseudoaristata?
Yes, I used the term wood to cover both, but next time I’ll be more precise and specify wood or bark. Thank you Zotto, I’ll compare with those two species.
Hans-Otto Baral, 23-04-2025 21:39
Hans-Otto Baral
Re : Orbilia sp. similar to O. pseudoaristata?
It is actually so that the aristata group prefers to grow on bark, as some other tolerant Orbilias also do.