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Mollisia sur Pinus
Michel Hairaud, 08-11-2025 09:15
Michel HairaudBonjour, 
Pouvez vous m'aider à identifier ce Mollisia récolté sur Pinus sylvestris pourrissant sur sol calcaire :
- Apothécies de diamètre 3-4,5 mm. KOH négatif
- Asques 95-100 x 8-9µm, IKI Bleu , Crochets +
- Spores 12 - 14,5 µm, OCI 4 
Paraphyses x3 -4 µm, avec bien sur une vacuole réfringente homogène mais souvent avec une guttule au sommet non réfringente . 

Merci 
Amitiés. Michel
  • message #83822
  • message #83822
Hans-Otto Baral, 08-11-2025 09:53
Hans-Otto Baral
Re : Mollisia sur Pinus
Hi Michel

I would place this in Pyrenopeziza based on the araphysis contents. There is a folder "subalpine IKI3bb 13,3-14,5 x 3,2-4,4 +-egutt" which cannot be your species because of the low OCI.

The spores reminded me of M. ventosa, but this is impossible.

Did you measure the spore width?

Is it a collection from Deux-Sèvres fromthis November?

Zotto 
Michel Hairaud, 08-11-2025 13:12
Michel Hairaud
Re : Mollisia sur Pinus
Thanks Zotto. 
Spores width = 3-3,8 µm 

Your file subalpine IKI3 BB has a collection with many common characters with mine.
I would have excluded Pyrenopeziza because of the homogenous VBs in the paraphyses and the anchoring hyphae. See new pics. 

I had also noticed the similarity with M. ventosa spores. 

Yes Collection on this 4 November in the Chizé forest . 
Michel
  • message #83826
  • message #83826
Hans-Otto Baral, 08-11-2025 15:31
Hans-Otto Baral
Re : Mollisia sur Pinus
Anchoring hyphae exist also in Pyrenopeziza. The refractive globose SCB iy very typical of Pyrenopeziza, while the VBs are very low-refractive. Pyrenopeziza has usually non-refractive vacuoles, but such occur sometimes. You can try DNA.