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17-02-2016 22:49

Ueli Graf Ueli Graf

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

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Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

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Hello,this Orbilia grew on a strongly rotten branc

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Stephen Mifsud Stephen Mifsud

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Enrique Rubio Enrique Rubio

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Stefan Jakobsson

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

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François Bartholomeeusen

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

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Josep Torres Josep Torres

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Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

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Ascomycete on soil
Enrique Rubio, 11-03-2016 20:20
Enrique Rubio

Hi forum


We have found these small (up to 1 mm in diam.), scattered, semiinmersed to almost superficial, blackish, areolate, subglobose or broadly pyriform, papillate, not hairy perithecia on wet sandy soil at the SW of Spain.


The 8-spored asci, up to 500 micr. long, seem to have not an apical apparatus and the mature ascospores (dotted?) are brownish black with a septum near one pole. Many trabeculate paraphyses are present among the asci.


Could yo help me with an idea for it?


Thanks again

  • message #41470
Jacques Fournier, 11-03-2016 21:00
Jacques Fournier
Re : Ascomycete on soil
Hola Enrique,
not sure it is a true septum, likely an artefact.
Many Coniochaeta spp. are soil dwellers. Was is on the seaside or near a river?
Sorry I have no better idea.

Jacques
David Malloch, 11-03-2016 21:09
David Malloch
Re : Ascomycete on soil
Hello Enrique,

Is it possible the dotted appearance of the ascospores is due to pits in the wall?  This might suggest Gelasinospora or, because of the septum, Diplogelasinospora.  The habitat on soil would be OK for those genera.

Dave
Enrique Rubio, 11-03-2016 21:11
Enrique Rubio
Re : Ascomycete on soil

Hi Jacques


I think is likely a true septum because all the very mature ascospores have it. The perithecia were in a dry place at the south of Spain, only wet by the  winter raining days. They grew together with a strange Humaria species.


Thanks a lot for your opinion

Enrique Rubio, 11-03-2016 21:20
Enrique Rubio
Re : Ascomycete on soil

Hi David


I tought in Gelasinospora but I think lack the typical pits. The walls are smooth or only finelly dotted, I don't know.


It is curious that just now a friend of mine from the province of Navarra (NNE Spain) have found the same fungus on soil too....!


Thanks

Alain GARDIENNET, 12-03-2016 06:31
Alain GARDIENNET
Re : Ascomycete on soil

Hi friends,


This fungus remembers me some lichenicolous species (Roselliniella, Roselliniopsis ...)


Some of them grow on lichens on soil. Have you looked at Roselliniella genus  ?  especially R. cladoniicola that I regularly found on terricolous Cladonia. Ascospores are more roundish but it could be an other idea.


Alain

Enrique Rubio, 14-03-2016 15:16
Enrique Rubio
Re : Ascomycete on soil

Hi Alain


My knowledge of these genera is very little, but the ascomata are not cleistothecial and only very few mosses are present on this soil.


Many thanks again!