Tympanidaceae - Forum ASCOFrance

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Tympanidaceae

Elisabeth Stöckli, 01-12-2019 13:20

Bonjour,

Trouvé sur bois mort et décortiqué de feuillu (sur un ancien dépôt de bois au bord d'une route à 622 m), apothécies 0.2 - 0.6 mm, turbinée à l'état jeune, puis étalée, à hyménium brun-noir, surface externe concolore, asques 160 - 240 x 10 - 15 µm, crochets+, octosporés, IKI-, spores 57 - 92 x 3 - 3.5 µm de diamètre, multiseptées, paraphyses filiformes et ramifiées au sommet. Merci de me donner une idée.

Elisabeth

Adam Polhorský, 01-12-2019 14:10

Re : Tympanidaceae

Super! I had this species 2 times. I think it`s the same genus as Zottos "Skyttea/Durella" uncinata. Sequence places it unresolved within Helotiales. Despite the strong ionomidotic reaction and rounded inamyloid ascus apex its unrelated to Cordieritidaceae. https://drive.google.com/open?id=1yJpGqMX0kDA6zHe3BJIUxGp2KwcVcrTA

Elisabeth Stöckli, 01-12-2019 15:14

Re : Tympanidaceae

Great, thanks a lot!

Ionomidotic reaction KOH 5% , for the bark, I think it's Alnus.

Elisabeth

Hans-Otto Baral, 01-12-2019 16:01

Re : Tympanidaceae

Hi Elisabeth & Adam

to ensure Alnus requires a radial section I miss longer radial rows of pores and false radial rays. Could be Salix?

I do not know the specie sbut agree with Adam.

Zotto

Adam Polhorský, 01-12-2019 16:30

Re : Tympanidaceae

Thanks aswell Elisabeth.

Please keep the specimen, it would be nice to have a record outside of Slovakia.

Atleast S.uncinata is quite plurivorous. In Slovakia it`s occuring through lowland dry Pinus-Quercus to montane Sorbus/Alnus forrests.

Elisabeth Stöckli, 02-12-2019 21:08

Re : Tympanidaceae

Hello Zotto

Unfortunately, I can't make a better cut, the wood is rotten.

Elisabeth

Hans-Otto Baral, 02-12-2019 23:38

Re : Tympanidaceae

Hello Elisabeth

hmm, coul dbe Salix ore perhaps rather Populus?

Zotto

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