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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

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 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
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Scutellinia hirta ? sur souche moussue
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Lambertella sur Olea
Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

Calycina ?
éric ROMERO éric ROMERO

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

31-01-2026 09:17

Small hairy discs on Castanea
Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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Tiny white fungi on dead ferns
Juuso Äikäs, 13-04-2018 19:57
I found plenty of these today growing on dead fern stems amid melting snows. These are very, very small; I couldn't see any details with a 10x loupe. The photo was taken with the help of a microscope. I'd guess that they are quite young. Some had a little opening in the middle. Does someone have any idea what the family might be? I haven't yet attempted to do any microscopy.
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Hans-Otto Baral, 13-04-2018 20:10
Hans-Otto Baral
Re : Tiny white fungi on dead ferns
Are you sure they are fully hydrated? Did you try to spray water or submerge it in water for some seconds if they get more open?

As you have enough it would be interesting to test the microscopy.
Juuso Äikäs, 13-04-2018 21:31
Re : Tiny white fungi on dead ferns
I immersed it in water for a while and they opened up a little bit but none much more than seen in the first picture. I did a little microscopy but didn't find any asci. The paraphyses are about 1 micrometer wide (4th image). The third image is of the outer hairs.
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Hans-Otto Baral, 13-04-2018 22:19
Hans-Otto Baral
Re : Tiny white fungi on dead ferns
Indeed, the hairs are glassy and I assume a species of Urceolella. When you add 5% KOH the glassiness of the hairs and their entire outline must disappear.

Perhaps you succed in keeping them for some days in a moist box.
Juuso Äikäs, 13-04-2018 22:30
Re : Tiny white fungi on dead ferns
Thank you for the replies. I'll try to do that and post some new info later if I succeed.
Juuso Äikäs, 15-04-2018 15:28
Re : Tiny white fungi on dead ferns
I managed to do the KOH test. I have 3% KOH and I heated it with a lighter for a while and looked at the hairs. They looked the same as in water.
Then I tried heating it a bit longer so that it bubbled for a few seconds. This time the glassiness had clearly gone and at 400X the hairs were almost invisible. Hopefully the fruitbodies start producing spores at some stage.
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Hans-Otto Baral, 15-04-2018 18:23
Hans-Otto Baral
Re : Tiny white fungi on dead ferns
Great, exactly this is the right method, if the dissolution does not work.  Species of Hyalopeziza do not loose glassiness even when boiling in KOH.