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03-08-2020 20:40

White Hymenoscyphus
Juuso Äikäs

I came by a shrub of some kind in a park-like envi

23-10-2016 17:55

Stamnaria
Elisabeth Stöckli

Bonsoir, Sur tiges mortes d'Equisetum arvense tro

09-07-2020 00:39

Stamnaria sp (Equisetum ramosissimum) Ascos amiloides
Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

03-08-2020 11:06

Scutellinia
Castillo Joseba Castillo Joseba

de ayer en bosque de abetos y hayas,   recolecta

02-08-2020 23:53

Orbilia
Garcia Susana

Hola, He encontrado un solo apotecio creciendo so

02-08-2020 17:16

literature request
Angel Pintos Angel Pintos

anybody can provided this:?Mueller & J. A. von

02-08-2020 11:52

Peziza howsei/emileia
Marcel Heyligen Marcel Heyligen

I'm looking for next article publishers october 20

31-07-2020 14:30

Lopadostoma pouzarii description
Alex Akulov Alex Akulov

Dear friendsCan you help me to find the article:Gr

17-07-2020 17:12

Orbilia
Khomenko Igor Khomenko Igor

Hi, this is my first post and I'm looking for help

31-07-2020 21:08

Scutellinia colensoi?
Juuso Äikäs

I found some Scutellinias a couple days ago on a w

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White Hymenoscyphus
Juuso Äikäs, 03-08-2020 20:40
I came by a shrub of some kind in a park-like environment and found these guys growing beneath it, on blackened twigs. 

The apos were fairly tough and yellowing. 

Asci with croziers, IKI+, paraphyses with VBs. If I interpreted correctly, the medullary excipulum is of textura intricata and ectal excipulum of textura prismatica. 

Spores:

(15.7) 16.7 - 18.9 (20.5) × (4) 4.3 - 4.9 (5) µm
Q = (3.2) 3.7 - 4 (5.1) ; N = 20
Me = 17.8 × 4.6 µm ; Qe = 3.9

Might someone know what the species could be?
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Hans-Otto Baral, 03-08-2020 20:43
Hans-Otto Baral
Re : White Hymenoscyphus
Well, this is the most comkmon discomycete since about 20 years: H. fraxineus, cause of the ash dieback disease. Differs from H. fraxineus merely by having croziers.

Both on blackened Fraxinus petioles.
Enrique Rubio, 03-08-2020 20:51
Enrique Rubio
Re : White Hymenoscyphus
Hi Zotto
Do you know if H. fraxineus has been found in Spain? I only see H.albidus.
Enrique
Juuso Äikäs, 03-08-2020 20:58
Re : White Hymenoscyphus
Ok then, thank you! H. pseudoalbidus is apparently an older name for it. Fraxinus isn't at all common here and I'm not too familiar with it. I thought it would be more tree-like. Or maybe that's some other plant and the petioles came from a nearby tree?
Hans-Otto Baral, 03-08-2020 21:22
Hans-Otto Baral
Re : White Hymenoscyphus
I am still unaware of  Spanish record. Even in Poitou-Charente I am not sure.

Certainly these are Fraxdinus petioles. The transsect should be bilateral-symmetrical (flattened).
Enrique Rubio, 03-08-2020 21:28
Enrique Rubio
Re : White Hymenoscyphus
It seems that Spanish ash trees are strong and still resist the advance of this fungus.
On the one hand I want to see the fungus, but on the other I don't.
Thanks, Zotto.
Hans-Otto Baral, 03-08-2020 21:35
Hans-Otto Baral
Re : White Hymenoscyphus
I can hardly believe that. maybe the climate is not good for the fungus, or the Pyrenees form a barrier. But in Croatia it occurs since many years.