05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
07-03-2026 13:06
éric ROMERO
Bonjour tous, Sur cône d'épicea fortement imbu,
08-03-2026 14:05
Thierry Blondelle
Bonjour à tous,Sur 3 récoltes supposées de H. l
05-03-2026 16:30
François BartholomeeusenDear forum members, On the 2nd of February 2026,
06-03-2026 09:41
Hi forum, I'm now looking for another reference c
Hypoxylon rubiginosum?
Riet van Oosten,
06-05-2023 15:45

Hello, found by Ruud van Middelkoop, April 2023, the Netherlands.
Is this Hypoxylon rubiginosum?
KOH extractable pigments orange
Yellow granules beneath the surface
Ostioles umbilicate
Asci J+
Spore sizes Me: 10.6 x 4.4 µm
Riet van Oosten,
06-05-2023 15:54
Martin Bemmann,
06-05-2023 18:37
Re : Hypoxylon rubiginosum?
Hi Riet,
do you think Robinia is possible (hardwood) for this site?
Best
Martin
Riet van Oosten,
06-05-2023 20:28
Re : Hypoxylon rubiginosum?
Hi Martin,
Ruud did not notice any Robinias and he does not know if they were ever there, but Robinia could be, microscopically it looks very similar.
So we can exclude softwood :-)
Thank you very much!















