These very small (100-300 µm), erumpent, greenish, somewhat pulvinate apothecia were found, by chance, under the bino, between ascomata of Pezicula myrtillina and Gibbera sp, on thiny terminal branches of Vaccinium myrtillus at 1700 m of altitude.

The apothecia are fringed by a crown of sparse hyaline subacute hairs, with somewhat partially glassy solid walls,  IKI negative, that don't dissolve in KOH.

The 8-spored asci are IKI negative, arising from croziers. Paraphyses without VBs. Ectal excipulum globulosa to prismatica with strongly pigmented greenish walls. The peculiar ascospores 1(-2) septate.

I feel this fungus could be into the Naevioideae, perhaps close to Chaetonaevia.

Have you some idea for help me?

Thanks again

Kosonen Timo, 26-07-2016 10:34

Re : Strange greenish fungus on Vaccinium

not a good idea, but love the hairs! I suppose Zotto is around?

Timo

Hans-Otto Baral, 26-07-2016 10:41

Re : Strange greenish fungus on Vaccinium

very interesting!
I think it is a Makroskyttea, a genus so far only used for lichenicolous fungi.
But my lignicolous "Hyalopeziza sambuci" is a Makroskyttea too.

I have it in Cordieritidaceae.
I send you by mail the original article.

Your fungus make me thinking if my Hyalopeziza should also be a Makroskyttea as it has spores similar as there.

Enrique Rubio, 26-07-2016 10:47

Re : Strange greenish fungus on Vaccinium

Thank you to both