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09-04-2026 15:25

Slerotinia verrucispora ???
Jac Gelderblom

On bare soil between mosses Ifound an asco I deter

09-04-2026 13:55

Small-spored "Diplodia" on broom (Cytisus scoparius) - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10589176

09-04-2026 10:12

Melanosporalian on attached decayed wood on fallen Carpinus, Denmark - very long-necked
Thomas Læssøe

https://svampe.databasen.org/observations/10587061

08-04-2026 20:33

Gyromitra sp. ?
Vasileios Kaounas Vasileios Kaounas

Found 07-04-26, in Abies cephalonica. Diameter 1,

08-04-2026 10:39

Littérature Korf
FRANCIS FOUCHIER

Bonjour , je recherche en pdf cet article: KORF R

06-04-2026 15:04

Gnomoniaceae
David Chapados David Chapados

Hi! Could someone help me identifying this specim

29-06-2016 15:18

Scopinella
Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Scopinella?
Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

06-04-2026 21:36

Literature search
Viktorie Halasu Viktorie Halasu

Hello, could anyone please send me the article wi

06-04-2026 19:40

Nectriaceae on Fagus
David Gibbs David Gibbs

Help with this one much appreciated, on rotting Fa

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Hypoxylon?
Björn Wergen, 19-11-2013 17:54
Björn WergenHi 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
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Jacques Fournier, 19-11-2013 18:15
Jacques Fournier
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
Björn Wergen, 19-11-2013 18:21
Björn Wergen
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.