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03-02-2026 20:44

Mycoparasite with irregular conidia
Zetti Mario

When I first saw this white mould on an Agaricus s

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pyrenomycete on dead parts of foliose liverwort from Norway
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.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Lichénicole sur Lobaria
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Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

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Lichénicole sur Peltigera
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Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
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Bonjour, Cette hypocreale parasite en nombre les

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Scutellinia hirta ? sur souche moussue
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Lambertella sur Olea
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Calycina ?
éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Small hairy discs on Castanea
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Dear Forum,On decorticated wood of Castanea,I foun

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Calycina ?
Piet BORMANS, 11-11-2013 19:16
Piet BORMANS
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)

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Chris Yeates, 12-11-2013 13:43
Chris Yeates
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
Piet BORMANS, 13-11-2013 11:07
Piet BORMANS
Re : Calycina ?
Thank you Chris, that's a good advice.
Piet