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08-07-2020 00:01

Shane John

I would ask the indulgence of the group to perhaps

10-07-2020 17:50

Garcia Susana

Hola, Me gustaría vuestra ayuda para identificar

08-07-2020 16:47

Chris Yeates Chris Yeates

Bonjour tous While searching for the downy mildew

07-07-2020 13:34

Markov Sergey

I found this peziza sp. on loamy soil - on the gro

10-07-2020 14:26

Thomas Læssøe

Anybody in the know of eg Pseudoneottispora?See: 

09-07-2020 00:39

Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

08-07-2020 19:01

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je ne remets plus la main sur mon tiré-à

08-07-2020 20:29

Juuso Äikäs

These were growing on a dead grass stalk in a fore

08-07-2020 18:21

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en mdera si

08-07-2020 10:59

Joanne Taylor

Hi there,Does anyone have a copy of the following

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Discinella, Phaeohelotium ?? 011019
Miguel Ángel Ribes, 12-11-2019 09:55
Miguel Ãngel RibesGood morning

From Aragüés del Puerto, Huesca, this rare species of 1-2.5 mm growing in an old lake filled, in the alpine floor at 2,230 m, between undetermined mosses, in a very shadow and cold place, collected the day 1/10/2019.


Macro reminds me a Boudiera, Marcelleina, etc., but I think it has none, although I guess it will not be a Discinella or Phaeohelotium, at least I do not fit with any species of these genera.


Ectal excipulum with prismatic-angularis to subglobose texture in the margin. Margin with chains of 3-4 subglobose cells. Medullar excipulum has a double structure: a more internal layer with textura intricata of quite thick hyphae and a more external layer with textura prismatica of very long and thick hyphae. Asci with 8 biseriate spores, IKI -, I believe that without croziers (at least I have not been able to see any clear), of (79.6) 80.5 - 89.5 (95.7) × (7.8) 8, 3-10.8 (11.2) µm; N = 22; Me = 85.8 × 9.1 µm. Cylindrical paraphysis, usually with 1 large BV in the apical cell. Ellipsoidal-subfusiform spores, with 2 LBs at the ends, covered by a gel around its perimeter or only at one end, of (9.3) 9.5 - 10.9 (11.6) × (3.7) 3.9 - 4.5 (4.7) µm; Q = (2.2) 2.3-2.7 (2.9); N = 41; Me = 10.3 × 4.1 µm; Qe = 2.5


Thanks in advance.

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Hans-Otto Baral, 12-11-2019 10:23
Hans-Otto Baral
Re : Discinella, Phaeohelotium ?? 011019
Hi Miguel-Angel.

the crystals and VBs are important, they suggest an Ombrophila in my opinion, although the medulla is hardly gelatinised. But I cannot remember a species with these characters. 

The terrestrical O. limosella and "Discinella" badicolor are similar but spores and amyloid asci are different.

Zotto
Miguel Ángel Ribes, 12-11-2019 10:38
Miguel Ãngel Ribes
Re : Discinella, Phaeohelotium ?? 011019
Hi Zotto

Interesting, I will check Ombrophila species.

Thanks a lot.
Miguel Ángel Ribes, 12-11-2019 12:28
Miguel Ãngel Ribes
Re : Discinella, Phaeohelotium ?? 011019
Hi again

Latin is not my favorite language, but I think this collection fits more or less with "Discinella" badicolor, with IKI - asci. Spores are a little smaller, but I think it is the nearest species:

https://www.biodiversitylibrary.org/page/43592441#page/204/mode/1up

Thank you Zotto.
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Hans-Otto Baral, 12-11-2019 16:22
Hans-Otto Baral
Re : Discinella, Phaeohelotium ?? 011019
You may be right, but Boudier's smaller measurements leave some doubts, and whether his observation of inamyloid asci is due to inconspicuous apical rings remains to be clarified from the type.
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Miguel Ángel Ribes, 12-11-2019 22:57
Miguel Ãngel Ribes
Re : Discinella, Phaeohelotium ?? 011019
Yes, spore size is a problem, because Boudier always studied all his collections in vivo, didn't it?

To check iodine reaction in the Boudier's typus is another problem.

Thanks Zotto.
Hans-Otto Baral, 13-11-2019 07:30
Hans-Otto Baral
Re : Discinella, Phaeohelotium ?? 011019
Boudier always worked on fresh specimens and his preparation method was obviously careful, but sometimes he illustrated dead elements, for instance Orbilia spores. Bt not here, especially that he saw so well the VBs in the living paraphyses is remarkable.
Marcel Vega, 13-11-2019 08:06
Re : Discinella, Phaeohelotium ?? 011019
Hi Miguel,
Boudier also worked on exsiccata colleagues like L.C. Lutz had sent him.
Cheers,
Marcel
Miguel Ángel Ribes, 13-11-2019 08:42
Miguel Ãngel Ribes
Re : Discinella, Phaeohelotium ?? 011019
Ok, thanks Zotto and Marcel

So, Discinella aff. badicolor.

See you.
Hans-Otto Baral, 13-11-2019 08:45
Hans-Otto Baral
Re : Discinella, Phaeohelotium ?? 011019
Hi Marcel
I never saw a drawing of Boudier that clearly originates from an exsiccatum. Perhaps he avoided making drawings of them?
Zotto
Marcel Vega, 13-11-2019 23:30
Re : Discinella, Phaeohelotium ?? 011019
Hi Zotto,
Lamprospora lutziana probably was described from an exsiccate sent to Emile by Lutz as far as one can derive from their correspondance by letter.
You will find more about this in the next issue of the special interest-journal ascomycete.org
Best wishes,
Marcel
Hans-Otto Baral, 14-11-2019 09:48
Hans-Otto Baral
Re : Discinella, Phaeohelotium ?? 011019
I have Boudier's paper but only pl. VI while I miss plate V. I assume you have it?
Marcel Vega, 14-11-2019 16:59
Re : Discinella, Phaeohelotium ?? 011019
Yes, I have it but not with me right now, I am pretty sure it's available at ascomycete.org
Best wishes,
Marcel