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13-12-2019 20:42

Götz Palfner Götz Palfner

Bonjour tous,Sorry, but as my French is crap, I wi

14-12-2019 10:09

Marc Detollenaere Marc Detollenaere

Dear forum,   On a decorticated trunk of Populu

11-12-2019 22:21

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Pourriez-vous me confirm

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

13-12-2019 16:20

Chris Yeates Chris Yeates

Bonjour tous this is an area I feel rather ignora

12-12-2019 23:42

Maren Kamke Maren Kamke

Hello together, can someone provide me with this

12-12-2019 18:36

Roland Labbé

Bonjours ! Voici un Trichoderma (Hypocrea) inconn

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

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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.