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16-11-2025 21:09

Robin Isaksson Robin Isaksson

Anyone recognize this acc. to pictures.? Found on

14-11-2025 16:26

Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 23:22

Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

15-11-2025 20:25

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Josep Torres Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

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Tarzetta aff alnicola
SAAVEDRA MÓNICA, 12-05-2023 00:04
SAAVEDRA MÃNICALas medidas esporales son de T. alnicola pero hay unas diferencias que a mí me escapan, como son el mix de gútulas de las esporas (deberían ser bigutuladas) y algunas paráfisis capitadas. Será una var.?
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Nicolas VAN VOOREN, 14-05-2023 11:17
Nicolas VAN VOOREN
Re : Tarzetta aff alnicola
Hola.
Can you give the size of ascospores?
And ecology of this collection?
SAAVEDRA MÓNICA, 14-05-2023 17:57
SAAVEDRA MÃNICA
Re : Tarzetta aff alnicola
En bosque de ribera: Alnus, Fraxinus, Corylus, Fagus, Pinus....
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Nicolas VAN VOOREN, 14-05-2023 18:15
Nicolas VAN VOOREN
Re : Tarzetta aff alnicola
The spore size is shorter than in T. alnicola.
I'm not sure that the paraphyses top that you show can be taxonomically valuable.
As there are several types of trees in this place, hard to know the association with the Tarzetta. Maybe it's just a collection of T. cupularis...
SAAVEDRA MÓNICA, 14-05-2023 19:21
SAAVEDRA MÃNICA
Re : Tarzetta aff alnicola
El tamaño de los apotecios era entre 3 y 12 mm.
Miguel Ángel Ribes, 17-05-2023 23:18
Miguel Ãngel Ribes
Re : Tarzetta aff alnicola
Good night

Monica has sent me some apothecia. Unfortunately they have arrived overripe and quite damaged, but with hundreds of free mature spores in the hymenium. The asci and paraphyses are dead, but I think the spores are alive. All spores are biguttulated, both outside and inside the asci. The spore measurements are these:

(18,8) 20,1 - 22,3 (23,1) × (11) 12,4 - 13,7 (14,3) µm
Q = (1,5) 1,54 - 1,7 (2) ; N = 59
Me = 21,2 × 13 µm ; Qe = 1,6

With these measurements and spore shape, I think it's definitely T. cupularis. Are you agree?

Miguel Ángel Ribes.

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Nicolas VAN VOOREN, 18-05-2023 11:49
Nicolas VAN VOOREN
Re : Tarzetta aff alnicola
I agree.
Miguel Ángel Ribes, 18-05-2023 14:49
Miguel Ãngel Ribes
Re : Tarzetta aff alnicola
OK, thanks a lot.
SAAVEDRA MÓNICA, 18-05-2023 14:56
SAAVEDRA MÃNICA
Re : Tarzetta aff alnicola
Gracias a ambos.