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12-02-2026 14:55

Thomas Læssøe

https://svampe.databasen.org/observations/10581810

11-02-2026 19:28

Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by JÃ

11-02-2026 22:15

William Slosse William Slosse

Today, February 11, 2026, we found the following R

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

09-02-2026 11:42

Ã…ge Oterhals

Hi forum, I found this Lachnum on old hardwood tw

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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!