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14-05-2020 20:18

Small Mollisia
Juuso Äikäs

Mollisia is a difficult genus, but I decided to po

16-05-2020 14:57

En rama de Sambucus
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,  recolecta

16-05-2020 09:55

Pyrenomycete on Larix cone
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hi, this very little pyrenomycete was found in Mo

15-05-2020 09:06

Gelatinopsis septata?
Stefan Blaser

Hello everybody, I found this one on a "phlepioid

15-05-2020 16:29

Grovesiella abieticola
Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte d'Abies alba de 1 cm d

15-05-2020 09:36

cf. Massaria on Fraxinus bark
Ibai Olariaga Ibarguren

Hi there, This is a fungus that I found on bark o

13-05-2020 22:59

On Knopper gall, Moellerodiscus lentus?
Marian Jagers Marian Jagers

Cultured on a Knopper gall (Knopper gall found in

05-05-2020 19:25

Parafenestella ?
Andgelo Mombert Andgelo Mombert

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29-04-2020 19:47

Cucurbitaria s.l.
Andgelo Mombert Andgelo Mombert

Bonjour, Je ne parviens pas à identifier ce joli

11-04-2020 19:34

Gnomoniaceae ?
Andgelo Mombert Andgelo Mombert

Bonsoir, Sur brindille morte d'Acer opalus en sit

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Small Mollisia
Juuso Äikäs, 14-05-2020 20:18
Mollisia is a difficult genus, but I decided to post this and see if there is any hope of knowing the species.

These grew on a fallen, decorticated hardwood branch. The size of the apos is much smaller than of the typical gray ones that I find often on moist wood. There was a faint yellow reaction with 40% KOH, but under the microscope in 3% KOH I didn't notice anything. 

Spore measurements: (7.9) 8.9 - 10.7 (10.8) × (2.9) 2.93 - 3.1 (3.2) µm, N = 8.
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Hans-Otto Baral, 14-05-2020 20:23
Hans-Otto Baral
Re : Small Mollisia
Did you view under the mic when the KOH reached the fungus? Simply mounting in KOH does not permit to see a reaction. 3% KOH would be enough, even 1% I think.

To state the apo diameter would be helpful too.
Juuso Äikäs, 16-05-2020 12:43
Re : Small Mollisia
The diameter of the larger ones is about 1/3 mm. I took some pieces on a microscope glass and put a cover slip on and then a drop of 3% KOH on the side (1st pic) and did the same with water (2nd pic). Looks a bit yellower in kOH, but nothing too dramatic.
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Hans-Otto Baral, 16-05-2020 16:41
Hans-Otto Baral
Re : Small Mollisia
Yes it is more yellow, but important is to view the instantaneous reaction. To photograph it needs rapidity. A possibility could be M. albogrisea ined., Phaeomollisia picea is a synonym but cannot be transferred to Mollisia because of Mollisia piceae (pers.) Quel. This species reacts yellow  in KOH.
Juuso Äikäs, 16-05-2020 17:15
Re : Small Mollisia
Alright, thanks again for the info. Here's one pic: before and immediately after applying KOH.
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Hans-Otto Baral, 16-05-2020 18:12
Hans-Otto Baral
Re : Small Mollisia
So this looks negative.
Juuso Äikäs, 16-05-2020 20:53
Re : Small Mollisia
Maybe I'll stay away from Mollisias for a while :).
Mirek Gryc, 16-05-2020 21:14
Re : Small Mollisia
Hi Juuso
This is not a good idea.
Mollisia is difficult but among them you can find a lot of interesting species.

Do not cover the preparation with a slide when checking the reaction to KOH. Put a drop of KOH on the slide slide and then dip a piece of ascocarp in it. If the fruiting body reacts to KOH, you will see a yellowish coating around it in a few seconds.
The second way is to apply a drop of KOH to the fruiting body hymenium. If the reaction is positive, the hymenium will change to +/- yellow.
The reaction is visible to the naked eye or after applying a magnifier.
To be sure, it is worth using both methods at the same time
Good luck
Mirek