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10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

04-07-2022 18:45

Enrique Rubio Enrique Rubio

I can find no suitable answer for this white Bryos

11-08-2022 08:16

Josep Torres Josep Torres

Hola.Un muy diminuto Pirenomyceto sobre un tronco

11-08-2022 00:45

Stefan Jakobsson

On a thin deciduous stick (Salix/Alnus/Betula) on

10-08-2022 09:11

Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

10-08-2022 18:45

François Bartholomeeusen

Good evening all, On 5 August 2022, a friend gave

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

06-08-2022 22:20

Marcus Yeo

I found this ascomycete today on dead leaves of Er

16-07-2022 17:01

Zetti Mario

Hi, I am doing some work with microfungi and durin

02-08-2022 17:48

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

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Helotiale on Veratrum album
Enrique Rubio, 12-07-2016 20:09
Enrique Rubio

Hi again


I need your opinion on this Helotiale found on Veratrum album. I think it could be a Calycellina species.


Apothecia very densely gregarious, narrowly sessile, 0.3-0.7 mm in diam., whitish, amber when drying, margen even, only minutely downy as the excipulum.


They are growing on old stems of Veratrum album at 1700 m of altitude. Ascospores with low lipid content (< 10%). Asci 45-80 x 8-10, 8-spored, pore IKI bb of Calycina-type, arising from croziers. Paraphyses with slightly inflated tips with several not pigmented VBs, that stain in CRb. Ectal excipulum of hyaline textura globuloso-angularis. Margin with inconspicuous cylindrical with VBs, as the paraphyses.


Many thanks for help me

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Hans-Otto Baral, 12-07-2016 20:30
Hans-Otto Baral
Re : Helotiale on Veratrum album
I am sorry I cannot say. It has a bit of Parorbiliopsis = Hyaloscypha , but the abundant subiculum! Calycellina should have VBs in the paraphyses.
Zotto
Enrique Rubio, 12-07-2016 20:33
Enrique Rubio
Re : Helotiale on Veratrum album

Hi Zotto


The subiculum doesn't exist. Do you reject at all Calycellina as a possibility?

Enrique Rubio, 12-07-2016 20:36
Enrique Rubio
Re : Helotiale on Veratrum album
And the paraphyses have VBs that stain
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Hans-Otto Baral, 12-07-2016 20:50
Hans-Otto Baral
Re : Helotiale on Veratrum album
Oh yes, but do they exist also without CRB?
maybe IKI stains them red-brown?

Why doesn't a subiculum exist? Your photo reminded me of Pezizella parasitica.
On your nice section you have put the scale on it.
Enrique Rubio, 12-07-2016 21:03
Enrique Rubio
Re : Helotiale on Veratrum album

Yes, Zotto. The VBs exist, altough inconspicuous, without CRb. And they don't react in IKI.


There are not a well developped subiculum under the apothecia

Michel Hairaud, 12-07-2016 21:08
Michel Hairaud
Re : Helotiale on Veratrum album
Hi Enrique, and Zotto and everyone,
Another one from your paradise we had not met yet .

The spore figure looks particular.
I would also doubt a Caycellina species, as Zotto does . Did you check whether the spore wall becomes violet in CRB ?
How about a Calycina ? These rather inconspicuous VBs coloured in CRB you can find for example in C. inopiculata (on Iris dead leaves)

Bravo pour cette trouvaille, anyway

Amitiés
Michel
Enrique Rubio, 12-07-2016 21:10
Enrique Rubio
Re : Helotiale on Veratrum album

Hi Michel


The ascospores don't become violet in CRb.

Hans-Otto Baral, 12-07-2016 21:31
Hans-Otto Baral
Re : Helotiale on Veratrum album
Hi Michel
Calycina usually has VBs as well. Could you please repeat the species name, I did not well understand.
Zotto
Michel Hairaud, 12-07-2016 22:43
Michel Hairaud
Re : Helotiale on Veratrum album
Uff ! tiring day ! 
 the paraphyses I had in mind belong in Pyrenopeziza inapiculata , not Calycina
So forget my suggestion
Michel
Enrique Rubio, 12-07-2016 23:45
Enrique Rubio
Re : Helotiale on Veratrum album
Yes, Michel. I was also surprising