Bonsoir tous
I recently collected a small dark fungus on Rubus fruticosus stems which in the field I took to be a superficial globose prenomycete. Only when viewd under the dissecting microscope did I see that it was a discomycete with urceolate apothecia such as one finds in certain Pyrenopeziza species. A squash under the compound microscope came as quite a surprise: here was a crustose ectal excipulum such as one finds in Micropeziza, but the paraphyses were very different from what one expects in that genus, being more like those of a Pyrenopeziza.
Details are:
*  Apothecia numerous, scattered, 220-300µm diameter. Globose to urceolate dark slate grey to black with slight paler mouths.
*  Asci 8-spored; IKI+; I suspect it has croziers, but have yet to confirm that.
*  Ascospores biseriate, clavate 5.5-7.5 x 1.9-2.4µm; with either no contents or with a quite large apical LB and occasionally also with a smaller basal one.
*  Paraphyses parallel-sided, with a few septa towards the base; lacking VB's and barely widening at the apex, if at all.
*  Basal cells forming a more or less distinct circular pad, composed of thick-walled globose cells.
*  Inner excipulum consisting of texture prismatica towards the base, this changing to texture porrecta approaching the apothecial 'mouth' where these cells form rather coarse tufts or teeth.
*  Outer excipulum consisting of dark reddish brown opaque crustose matter.

I hope the attached images will give an idea of what I am trying to convey above.

Despite the fact that Rubus fruticosus has been quite extensively studied and the list of associated species is quite comprehensive I cannot find a genus to fit this - though I may be overlooking something very obvious.

Any suggestions would be more than welcome.

Cordialement
Chris