Accès membres

Mot de passe perdu? S'inscrire

24-12-2025 18:12

Orbilia
Ethan Crenson

Hello all, A friend found this Orbilia growing on

24-12-2025 17:08

Propolis sp. on Picea abies
Hulda Caroline Holte

Hello, I have found this propoloid ascomycete on

23-12-2025 11:27

blanc poilu
Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Small resin asco?
Mirek Gryc

Hi. „I doubt it is possible to identify this ti

23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Spherical Pyrenomycete
Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Phylloscypha labessiana ?
Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Nectria ??
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Phylloscypha boltonii
Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

« < 1 2 3 4 5 > »
Cytospora or ...?
Sergey Markov, 25-04-2021 21:48
I found today a small pyreno on Betula pendula, on a fallen branch. This fungus may be a host for yellow-colored Tremella sp. Perithecia are in bundles of 3...8 pieces in each ascostromata, irregularily arranged. Ascostromata are immersed in the bark.

Ascospores hyaline, allantoid, non-septate, single-celled, measurement on the photo.

Asci IKI-, hyaline, almost invisible in MLZ and Congo/SDS.

I myself have not been able to identify the species. I only suggested the genus as Cytospora(Leucostoma?). Please help.
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
  • message #68618
Stoykov Dimitar, 26-04-2021 07:02
Stoykov Dimitar
Re : Cytospora or ...?
Hallo Sergey,

It looks like Leucostoma niveum. Asci mosty 8 -spored, rarely 4-spored; spores 12-17 × 2-4 mictometers.

Dimitar
Sergey Markov, 26-04-2021 10:52
Re : Cytospora or ...?
Thank Yoy very much, Dimitar. It fits not bad and was reported from Betula sp. Also it was reported in conjunction with Peniophora sp. and Peniophora is a host for Tremella mesenterica.