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Björn NordénBig thanks in advance.

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Del pasado dia 4 en bosque de hayas, en tierraA

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Del pasado sabado, en bosque de hayas y avellanos,

13-06-2025 09:41
Hello.A cerebriform ascomycete sprouting scattered
Calycina ?
Piet BORMANS,
11-11-2013 19:16

Hi,
A few days ago I found this discomycete on a dead leaf (underside) of Blechnum spicant.
Ascomata: 50 – 200 µm across, ad first white, after three days turning red.
Asci: 35 – 40 x 4 – 5 µm, 8-spored
Spores: 8 – 10 x 1,5 µm
Can this be a Calycina and so yes, which one please?
Regards,
Piet
Photo ascomata: 1a, b and c
- Asci and spores: 2a (water x 400); 2b (water
– x 1000); 3c (IKI x 1000)
Chris Yeates,
12-11-2013 13:43

Re : Calycina ?
Hello Piet
it is difficult to see whether the apothecia have short hairs or not; have you considered Psilachnum chrysostigmum (with its extensive synonymy! - http://www.speciesfungorum.org/Names/SynSpecies.asp?RecordID=321894)?; it has a variety versicolor which turns red (usually on Phyllitis, but perhaps not impossible on other fern hosts).
Cordialement
Chris
it is difficult to see whether the apothecia have short hairs or not; have you considered Psilachnum chrysostigmum (with its extensive synonymy! - http://www.speciesfungorum.org/Names/SynSpecies.asp?RecordID=321894)?; it has a variety versicolor which turns red (usually on Phyllitis, but perhaps not impossible on other fern hosts).
Cordialement
Chris
Piet BORMANS,
13-11-2013 11:07

Re : Calycina ?
Thank you Chris, that's a good advice.
Piet
Piet