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17-02-2016 22:49

Ueli Graf Ueli Graf

Hello, I'm looking for  Donadini J.C.  1981 Le g

14-08-2022 18:08

Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

14-08-2022 15:50

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,this Orbilia grew on a strongly rotten branc

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

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 00:45

Stefan Jakobsson

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

10-08-2022 18:45

François Bartholomeeusen

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

11-08-2022 08:16

Josep Torres Josep Torres

Hola.Un muy diminuto Pirenomyceto sobre un tronco

10-08-2022 09:11

Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

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White Calycina with Chalara-anamorph
Enrique Rubio, 06-09-2019 18:25
Enrique RubioSmall, white, substipitate or broadly stipitate apothecia erumpent from bark of Quercus robur (soc. Rosellinia corticium). Asci 8-spored, IKI b with apical apparatus of the Calycina-type, arising from croziers. Ascospores usually bicellular but also short ellipsoid and unicellular. Excipulum with highly developed textura oblita. Many Chalara-like conidia attached to the hymenophoral cells.
Have yo some idea for me?
Many thanks again.
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Hans-Otto Baral, 06-09-2019 22:28
Hans-Otto Baral
Re : White Calycina with Chalara-anamorph
I am sorry I cannot say. Apos look a bit immature. A positive iodine reaction I cannot see.
Enrique Rubio, 07-09-2019 00:44
Enrique Rubio
Re : White Calycina with Chalara-anamorph
As you well know, it is not very easy to study a very mature Calycina in good condition.
Here is an image of the positive IKI reaction.
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Hans-Otto Baral, 07-09-2019 08:57
Hans-Otto Baral
Re : White Calycina with Chalara-anamorph
It is strange, in this very good phoot I see the ring but no colour.
Hans-Otto Baral, 07-09-2019 08:57
Hans-Otto Baral
Re : White Calycina with Chalara-anamorph
It is strange, in this very good phoot I see the ring but no colour.
Enrique Rubio, 07-09-2019 09:02
Enrique Rubio
Re : White Calycina with Chalara-anamorph
The colour of the weakly positive ring is very pale blue
Hans-Otto Baral, 07-09-2019 09:13
Hans-Otto Baral
Re : White Calycina with Chalara-anamorph
Ws this a twig or a thick branch? Lying on the moist ground?

From Mirek Gryc I got the suggestion that this could be related to calycina italica, but I think the large oil drops forbid such identity, also the shorter spores and more refractive VBs in the paraphyses.
Enrique Rubio, 07-09-2019 09:17
Enrique Rubio
Re : White Calycina with Chalara-anamorph
The branch, lying on the moist ground, was 50 mm thick.
But the excipulum has no vesiculous cells and this makes it even further away from italica.
Mirek Gryc, 07-09-2019 10:38
Re : White Calycina with Chalara-anamorph
In fact, I wanted to confirm the identification of the collection I found.
The spores also contained oil drops. There were, of course, far fewer of them. That is why this collection interested me.

However, there are many more differences between our collections, which rather excludes this species.

Mirek
Enrique Rubio, 07-09-2019 20:40
Enrique Rubio
Re : White Calycina with Chalara-anamorph
Thank you Zotto and Mirek
Thank you for your kindly help.