12-06-2026 14:50
François Freléchoux
Bonjour, Voici la brève description d'une Mollis
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
11-06-2026 19:01
William Slosse
Hello all,In an attempt to make a culture of a sus
11-06-2026 19:03
Nicolas VAN VOOREN
Chers membres d'Ascofrance,Le site sera placé en
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
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.
Stoykov Dimitar,
26-04-2021 07:02
Re : Cytospora or ...?
Hallo Sergey,
It looks like Leucostoma niveum. Asci mosty 8 -spored, rarely 4-spored; spores 12-17 × 2-4 mictometers.
Dimitar
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.