23-05-2026 18:57
Sylvie Le GoffBonjour à tousRécolté sur une branchette de Sal
23-05-2026 11:44
Charles Grapinet
Hello, I am having trouble identifying this copro
22-05-2026 14:44
Lothar Krieglsteiner
in unripe condition citrine yellow, then soon fadi
22-05-2026 21:35
Steve ClementsBonjour, I expected this find on old wood on our
22-05-2026 18:12
Lothar Krieglsteiner
... in moist chamber from Portugal.As the fungus s
22-05-2026 20:08
Ethan CrensonHello all, Yesterday in NYC I was visiting an e
11-01-2022 16:36
Jason Karakehian
Hi does anyone have a digital copy of Raitviir A (
20-05-2026 17:47
Margot en Geert VullingsWe found this Mollisia on dead Juncus stems mown l
22-05-2026 14:47
Gernot FriebesHi,superficial ascomata collected on bark of a liv
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.