Hi Chris.
You need to observe ejected ascospores in Cotton Blue to check if they are really smooth.

Salut Nicolas
when I made the original post the fungus was not ejecting mature spores. Now it has and the spores are definitely ornamented, with very low warts which are scarcely visible in profile. These images were made at x1000 under oil, and using Nomarski DIC illumination. A series of optical 'slices' was made in each case and then stacked using Zerene Stacker software. The images were then edited to remove any artefacts created by the stacking procedure, to ensure that the resulting images were as close as possible to what I observed down the microscope.
Had I been unsure as to the presence of ornamentation I would have stained with CB, but I always prefer to deal with living material whenever I can. As well as the spore ornamentation a gel sheath was observed, both on spores still in the ascus and on ejected ones as seen here. I also include a photograph showing the growth of the fungus in the field; it seemed to favour areas of quite rotted (cattle? possibly horse) dung which was often colonised by simple algal growth.

Amitiés
Chris

Hello Criss.

Your fungus seems to match C.rubra; may be the erubescens variety but to check. Think also compare with C.coprinaria normally has longer hair.
The substrate is in my opinion the old cow dung.

Regards.
Michel.

Merci beaucoup Michel.

amitiés
Chris