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23-05-2026 18:57

Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

23-05-2026 23:53

Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

22-05-2026 21:35

Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

20-05-2026 17:47

Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

22-05-2026 14:47

Gernot Friebes

Hi,superficial ascomata collected on bark of a liv

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Byssosphaeria ?
Ethan Crenson, 08-03-2016 08:53
Hi,

I found this tiny pyrenomycete in Brooklyn.  Tiny black roughened ascomata, less than .5mm, superficial on bare wood (probably Quercus).  Red around apical opening.  1, 2 & 3-septate hyaline spores measuring 16-20µm by 5-5.5µm. 

Any help would be greatly appreciated.

Thanks!
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Jacques Fournier, 08-03-2016 09:08
Jacques Fournier
Re : Byssosphaeria ?
Hi Ethan,
your fungus seems to fit well Byssosphaeria rhodomphala. Are you on the tropical side of Brooklyn?
Cheers,
Jacques
Jason Karakehian, 30-07-2016 04:53
Jason Karakehian
Re : Byssosphaeria ?
Hi Jacques, I was just looking at Ethan's photos and notes on this and following your lead.  It really does seem to be Byssosphaeria rhodomphala!  We looked at a paper Algunas especies del género Byssosphaeria (Melanommataceae, Pleosporales) de Veracruz, México by Santiago Chacón-Zapata y Fidel Tapia-Padilla. Revista Mexicana de Biodiversidad 84: 739-745, 2013.  The taxon is given from Mexico and Ohio in the United States.  We feel like this is a good determination given that information, but we wondered if you have much experience with the genus and might offer additional input?
Thank you!