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Mot de passe perdu? S'inscrire

12-11-2025 21:47

sp en restos de poda
ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil
Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf
Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.
Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Phacidium
Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Allophylaria subliciformis?
Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Leptosphaeria?
Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Mollisia sur Pinus
Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Hymenoscyphus sp?
Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Cladosporium ?
Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

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Unknown fungus on Quercus stick.
Guy Buddy, 02-05-2019 15:07
Ver long, slender asci, inamyloid. Spore measure ~11.3 × 4.3 µm. Slender sinuous paraphyses. Thanks!
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Jacques Fournier, 03-05-2019 15:08
Jacques Fournier
Re : Unknown fungus on Quercus stick.
Hi,
asci and ascospores remind me of Lopadostoma, though the apical ring should be amyloid. But in this genus it is small and easily overlooked.
I wonder if the black pustules are single ascomata or represent several ascomata surrounded by a stroma. A close-up on a horizontal or better a vertical section would answer this question.
Are you related to Buddy Guy?
Cheers,
Jacques
Guy Buddy, 03-05-2019 16:14
Re : Unknown fungus on Quercus stick.
Thanks Jacques.  Unfortunately this sample got ignored and I did not spend a lot of time on it.  I added a photo of the asci in melzers.  I dont see any reaction.  Picture three is the ascoma cut open, it appears to be one large perithecia, not loculated. The spores do look good for Lopadostoma, but i dont see any species that are not loculated.  Maybe Barrmaelia?
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Guy Buddy, 03-05-2019 17:56
Re : Unknown fungus on Quercus stick.
section
Jacques Fournier, 03-05-2019 18:26
Jacques Fournier
Re : Unknown fungus on Quercus stick.
this is much helpful.

There is a layer of some orange brown tissue around the perithecium. If a chip of stroma added to a drop of 5*10 % KOH releases an orange pigment, we are likely dealing with Creosphaeria sassafras, a Xylariaceae which is not uncommon in North America.

Jacques
Guy Buddy, 03-05-2019 20:57
Re : Unknown fungus on Quercus stick.
Thats definitely it! Thanks for your help!
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