17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
Disco on Malus wood
Stefan Jakobsson,
05-05-2022 23:21
On the surface of a decorticated branch of Malus recently cut off from a standing tree there were some up to 0,4 mm long fruiting bodies of a more or less elliptic fungus for which I have no good ideas left. Young frbs are covered with a dark brown layer which later seems to break up and form a dark margin around the yellowish brown disc.
The spores are one to three times septate and at times germinating alredy in the ascus, 16.9-21.4 × 6.5-7.6 µm, with one large guttule in each cell. The asci are 50-76 × 12-16 µm, apex blue with and without pretreatment. The parafyses are agglutinated, best observed in ammoniacal CR, branched.
Any ideas what this could be? Southern Finland.
Hans-Otto Baral,
06-05-2022 09:56
Re : Disco on Malus wood
This looks much like a relative of Durella atrocyanea, for which i tentatively use Xylogramma (see my folder "Durella group"). But with its amyloid apical rings it is a very unusual species in Xylogramma. The only I have in my subfolder (from Asturias) has longer and narrower spores with less oil, and also has VBs in the paraphyses. Lots of un- or little known species exist in these drough-tolerant discos!
Stefan Jakobsson,
06-05-2022 21:43
Re : Disco on Malus wood
Thank you! Atrocyanea and the Asturian one are undoubtedly close.
I note the my photos went into the Asturian folder - by mistake I presume.
Hans-Otto Baral,
06-05-2022 22:04
Re : Disco on Malus wood
Well noticed :-)
Now corrected