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23-04-2024 13:17

Edouard Evangelisti Edouard Evangelisti

Bonjour à tous, Je viens de récolter ce que je

23-04-2024 15:18

Lothar Krieglsteiner Lothar Krieglsteiner

... but likely a basidiomycete. I hope it is o.k.

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

22-04-2024 08:54

Rafael Cabral

Bonjour à toutes et tous, Quelqu'un pourrait-il

22-04-2024 20:38

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon.Does anyone know this anamorph?It g

22-04-2024 11:52

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I made a loan of a collection of Microstoma

21-04-2024 14:29

B Shelbourne B Shelbourne

• Genus Brunnipila: Distinct macro and habitat,

19-04-2024 14:28

B Shelbourne B Shelbourne

Cudoniella tenuispora: Distinctive macro and habit

20-04-2024 16:02

Michel Hairaud Michel Hairaud

Bonjour,On me fait part, pour diffusion d une list

20-04-2024 09:56

Josep Torres Josep Torres

Hello.A few apothecia collected on Sunday, April 7

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White Hymenoscyphus on bark
Nicolas VAN VOOREN, 16-06-2019 11:54
Nicolas VAN VOORENHello.
Here is a Hymenoscyphus species growing on bark (probably Fagus) in a wet place.
Apothecia Ø 1-1.8 mm, sessile or short-stalked, pure wihite.
Ectal excipulum of t. prismatica.
Asci without crozier, pars sporifera 26-32 µm, IKI+ (bb)
Paraphyses without VB
Ascospores 11-14 (18) × 3-4 µm, sometimes with a septum (only when ejected), OCI 1-2.

H. phyllogenus seems close, but the substrate is different.
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Hans-Otto Baral, 16-06-2019 12:21
Hans-Otto Baral
Re : White Hymenoscyphus on bark
Hi Nico

this reminds me strongly of my Hymenosc./Phaeohelotium "Cagne" on coniferous wood. See my folder "monticola".

The VBs in the paraphyses are multiguttulate and vary between faintly and medim refractive.

So far 3x on coniferous wood in Vosges.

Did you look for the wood anatomy? In cross section coniferous wood is easily determined, and Fagus also.
Zotto
Nicolas VAN VOOREN, 16-06-2019 12:45
Nicolas VAN VOOREN
Re : White Hymenoscyphus on bark
Not easy to study the anatomy of rotten bark... As there were some Picea abies in the same place, this is an option.
I agree that this H. "Cagne" could fit, although the VB in the paraphyses are not so distinct in my collection.
Hans-Otto Baral, 16-06-2019 16:39
Hans-Otto Baral
Re : White Hymenoscyphus on bark
Ah yes, you wrote bark. Bark is not easy to identify. Is there no adherent wood? Fagus bark has a very characteristic inner side.
Nicolas VAN VOOREN, 16-06-2019 17:50
Nicolas VAN VOOREN
Re : White Hymenoscyphus on bark
Here is a picture of the bark which is layered.
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Hans-Otto Baral, 16-06-2019 18:33
Hans-Otto Baral
Re : White Hymenoscyphus on bark
Ah yes, such bark I know, but not from where :-(

Conifer probably not. And Fagus indeed similar, see here.
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