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20-02-2026 18:47

Marc Detollenaere Marc Detollenaere

Hello Forum,On rotten wood of Fagus, I found some

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

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ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

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Mollisia on Poaceae
Juuso Äikäs, 08-07-2021 20:51
I found this Mollisia species yesterday, growing on dead grass stems on the bottom of a mostly dried-out ditch.

KOH+ yellow, pp rather wide and with VBs, croziers+. Spores: 7.4 - 10.1 × 1.4 - 1.8 µm.

Tho spores are pretty long, but otherwise could this maybe be Mollisia caricina?


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Hans-Otto Baral, 08-07-2021 20:58
Hans-Otto Baral
Re : Mollisia on Poaceae
M. caricina is impossible , at least in my concept where the spores are much smaller and the paraphyses wider.

Zotto
Juuso Äikäs, 08-07-2021 21:11
Re : Mollisia on Poaceae
Ok, thanks. I'll keep it just Mollisia sp.
Andreas Gminder, 16-07-2021 07:59
Andreas Gminder
Re : Mollisia on Poaceae
Hallo,

this could be Mollisia citrinopigmentosa Svrcek may be, but I have not seen the type and no real idea of this species. The spores are said to contain no oil drops, but theses data are from dead spores and have to be taken with care.

all the best,Andreas
Hans-Otto Baral, 16-07-2021 10:19
Hans-Otto Baral
Re : Mollisia on Poaceae
Good idea, Andreas, I only cannot estimate the "wax-yellow" colour of the disc in the type, which seems to be present already without alcali. But Svrcek wrote that ammonia caused a yellow reaction.
Juuso Äikäs, 17-07-2021 08:39
Re : Mollisia on Poaceae
I checked the dried sample today in KOH and the spores do seem to still have drops. And ammonia fumes turned the apos yellow (maybe in other KOH+ yellow Mollisias as well, I'd assume).
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Hans-Otto Baral, 17-07-2021 11:30
Hans-Otto Baral
Re : Mollisia on Poaceae
Yes, ammonia and KOH do quite the same in Mollisia as far as I see.
Andreas Gminder, 17-07-2021 12:04
Andreas Gminder
Re : Mollisia on Poaceae
Hello,

as Zotto said, Ammonia and KOH do the same in Mollisia. I tested that several times. Also KOH 3% and KOH 10% and KOH 20% do the same results to my experience.

the spores from your specimen seem to be still alive, at least they look like. May be the drops are more difficult to observe or even absent when the specimen is some years old.

I have not checked the type, as said, on so am not sure wether they have drops or not. But Svrcek states that they don't have ....

all the best, Andreas