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19-08-2022 22:26

Juuso Äikäs

A few years ago I found a group of olive-brown fru

19-08-2022 19:05

Stefan Jakobsson

On a petiole of a leaf of what seems to be Populus

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

18-08-2022 17:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283042

10-08-2022 15:45

Pierre-Yves Julien

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

02-08-2022 17:48

Pierre-Yves Julien

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16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

16-08-2022 15:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283169

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Dothideomycete
Andrés Valverde Valera, 19-12-2016 22:37
Andrés Valverde ValeraBonjour,
Je vous ajoute quelques photos d'un dothideomycete (comme m'a dit le camarade Enrique Rubio), que j'ai trouvé le 5 décembre près de l'étang du Banyoles sur bois morte de possible Salix. Les pseudotecia? qui sont tuberculées mesurent 160 ?m aprox. J'ai pu regarder les spores, qui mesurent 14,4 x 4,8 micres.
J'espère que vous pouvez m'aider à déterminer de quelle espèce il s'agit.
Merci beaucoup d'avance,

Andrés Valverde Valera
El Prat de Llobregat (Barcelona)


PD. Excusez-moi mes possibles fautes d'orthographe.

  • message #46218
  • message #46218
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Gernot Friebes, 19-12-2016 22:46
Re : Dothideomycete
Hi,

could you elaborate a bit on the form of the ascomata? Is it possible that they grow on old stromata of Hypoxylon?

Best wishes,
Gernot
Alain GARDIENNET, 19-12-2016 23:40
Alain GARDIENNET
Re : Dothideomycete
You think at Immotthia, Gernot, right ?
Gernot Friebes, 19-12-2016 23:46
Re : Dothideomycete
Hi Alain,

indeed, that was my first impression...

Best wishes,
Gernot
Andrés Valverde Valera, 19-12-2016 23:58
Andrés Valverde Valera
Re : Dothideomycete
Hi Gernot,

I prefer to send to you a picture that I have just took under the microscope of these ascomata, that are tuber-form, distributed especially in the periphery of the fruiting bodies.

At first I thank in Hypoxylon serpens, for the shape of the mushroom, but I haven't found spores like those of Hypoxylon. Although I have to say that I have found an another kind of spores while searching the asci, that I attach in the second picture.

Best whishes,
Andrés
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Alain GARDIENNET, 20-12-2016 00:03
Alain GARDIENNET
Re : Dothideomycete

Andrés, the solution is perhaps there : http://www.ascofrance.fr/search_recolte/3004.


Alain

Gernot Friebes, 20-12-2016 00:05
Re : Dothideomycete
Hi Andrés,

yes, that looks very much like Immotthia atrograna on Hypoxylon sp. On your last photo you show the conidia of this species.

Best wishes,
Gernot
Andrés Valverde Valera, 20-12-2016 00:15
Andrés Valverde Valera
Re : Dothideomycete
Thanks you so much Alain and Gernot!!!

I've seen the subject "sur hypoxylon / 2. pyreno noir" and I also think that I have found the anamorphe (Sphaeropsis parasitans) but I will write only Immothia atrograna bescause I understand that they are their conidia.

Thank you very much for your help! Without you I would never have determined this species. Muchas gracias!!

Andrés
Jaklitsch Walter, 21-12-2016 19:31
Re : Dothideomycete
http://www.zobodat.at/pdf/OestZPilz_11_0093-0106.pdf

Hello, here is a little paper about Immotthia. I hope that the link works. Cheers, Walter
Andrés Valverde Valera, 21-12-2016 22:35
Andrés Valverde Valera
Re : Dothideomycete
Hello Walter,

Yes, the link works! And I have found another very recent in researchgate,
https://www.researchgate.net/publication/299423764_Immotthia_atrograna_Dacampiaceae_Ascomycota_a_new_for_Ukraine_fungicolous_fungus_from_the_Carpathians

Thanks you so much,

Andrés Valverde Valera