Disco on Malus wood - Forum ASCOFrance

17-09-2025 19:43

Lachnellula suecica ?

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sph�

17-09-2025 16:14

Sepultaria ?

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Ascomycete on Polystichum proliferum

Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Marthamycetales revision published

Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Encoeliopsis rhododendri

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Ascolichen on Blechnum?

Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Engler & Prantl, Nat. Pflanzenfam. (Ed. 2) 1938

Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Cheilymenia stercorea

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Otidea platyspora or something else?

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Pseudocoprotus catenipilus ???

Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

« < 1 2 3 4 5 > »

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

Accès membres

Forum AscoFrance