20-12-2025 23:08
Patrice TANCHAUDBonsoir, récolte sur sol sablonneux dans l'arriÃ
20-12-2025 15:47
Mirek GrycHi.These grew on pine wood that was heavily covere
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
19-12-2025 10:10
Patrice TANCHAUDBonjour, récolte réalisée en milieu dunaire, a
18-12-2025 17:23
Bruno Coué
Bonjour,je serais heureux d'avoir votre avis sur c
18-12-2025 18:07
Margot en Geert VullingsThese plumes were found on rotten wood.They strong
17-12-2025 18:35
Michel Hairaud
Bonjour à tous/Hi to everyone I am passing along
Hypoxylon?
Björn Wergen,
19-11-2013 17:54
Hi there,in Austria, my friend has found an interesting collection of a hypoxyloid species, from which I do not know what it is. Perithecia are about 0,6-0,9mm and are embedded in a black stroma, growing in rows on dead deciduous wood surface. Looking at the non-ostiolate perithecia, I first thought about Creosphaeria sassafras, but spores do not fit this species.
In KOH, it has no reaction. Asci Lugol +, spores have a conspicuous germ slit.
Any idea?
All the best,
björn
Jacques Fournier,
19-11-2013 18:15
Re : Hypoxylon?
Hi Bjorn,
not a Hypoxylon because of the lack of coloured granules and perithecia deeply immersed beneath surface.
It is a Lopadostoma, close to L. gastrinum based on the pale entostroma and its situation often superficial on dead wood but ascospores average a bit larger than reported for this species. Is the germ slit on one side or circumferential? The host is also important to know.
Cheers,
Jacques
not a Hypoxylon because of the lack of coloured granules and perithecia deeply immersed beneath surface.
It is a Lopadostoma, close to L. gastrinum based on the pale entostroma and its situation often superficial on dead wood but ascospores average a bit larger than reported for this species. Is the germ slit on one side or circumferential? The host is also important to know.
Cheers,
Jacques
Björn Wergen,
19-11-2013 18:21
Re : Hypoxylon?
Hi Jacques,
yes I had lots of doubts about my determination as Hypoxylon, but I did not find any other genus which it can belong to...
The germ slit is only on one side and the host should be Robinia.
yes I had lots of doubts about my determination as Hypoxylon, but I did not find any other genus which it can belong to...
The germ slit is only on one side and the host should be Robinia.