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

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

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

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

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

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!