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03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

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Mollisia discolor?
Riet van Oosten, 03-11-2023 14:23
Riet van Oosten
Hello,

Found by Laurens van der Linde, 26-10-2023 on Cornus.

Very small fruitbodies, is this Mollisia discolor?

- KOH reaction yellow

- Asci with croziers

- IKI+

- spore sizes Me: 12.3 x 2.7 µm

Greetings, Riet
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Hans-Otto Baral, 03-11-2023 15:54
Hans-Otto Baral
Re : Mollisia discolor?
I used discolor for a species with biguttulate spores, the LBs in the middle of each half, and KOH negative reaction. Not sure what this is. The spores are surely ejected when non-septate but how is the spore range and how the size of the asci (either living or dead)?

Is this a corticated twig as it looks-like or is it bare wood?

The branch was on the moist ground?

The apos on the first photo look like up to 0.5 mm at least, but the scale is on a photo with only a few perhaps much smaller apos. In fact, photos 4-5 show that the apos are up to 0.5 mm which is a medium size in Mollisia.
Riet van Oosten, 03-11-2023 17:45
Riet van Oosten
Re : Mollisia discolor?
Got a message from Laurens: the twig was corticated (fresh bark) and connected to a group of branches (it is a young tree) about 1.5 m from the ground, the apos grew together with Encoelia fuckelii.
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Hans-Otto Baral, 03-11-2023 20:25
Hans-Otto Baral
Re : Mollisia discolor?
This is good. Anyway, Mollisia is extremely difficult and it is advisable to obtain a sequence. Did you test Andreas' key?

The asci are all dead on the photos, for living asci one must multiply the values by perhaps 1.2x. Spore size is the same in H2O and CR but I assume both cases refer to living spores, dead spores are usually distinctly smaller (e.g. in MLZ).

The species could be drought-tolerant, considering its habitat.

I have not the time to scroll through my folders, there are many species , some folders have data on spore size and KOH-reaction.
Riet van Oosten, 03-11-2023 20:36
Riet van Oosten
Re : Mollisia discolor?
Thank you very much for your help Zotto!

This weekend I will scroll your folders and try the key!
Riet van Oosten, 06-11-2023 18:13
Riet van Oosten
Re : Mollisia discolor?
With Andreas' key (2008) I soon end up with Mollisia prunicola .......

7a: marginal cells very conspicious, blackish-brown, evidently > 50 µm, and mostly encrusted and KOH-reaction always strongly lemon-yellow.

8b: sp 9-14 x 2.2-3 µm, oil 3-4, asci with croziers on Prunus spinosa = M. prunicola

(The apos grew together with Encoelia fuckelii/Xeropilidium dennisii)
Hans-Otto Baral, 06-11-2023 21:19
Hans-Otto Baral
Re : Mollisia discolor?
Surely this is no option.

So the branch was exposed when there was Xeropilidium.
Riet van Oosten, 07-11-2023 15:12
Riet van Oosten
Re : Mollisia discolor?
Laurens van der Linde: they were quite close together (10-20 cm distance) and on the same side of the twig.

Next time Laurens will check if there are any fruitbodies still present.