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17-02-2016 22:49

Ueli Graf Ueli Graf

Hello, I'm looking for  Donadini J.C.  1981 Le g

14-08-2022 18:08

Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

14-08-2022 15:50

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,this Orbilia grew on a strongly rotten branc

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Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

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Pierre-Yves Julien

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04-07-2022 18:45

Enrique Rubio Enrique Rubio

I can find no suitable answer for this white Bryos

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Stefan Jakobsson

On a thin deciduous stick (Salix/Alnus/Betula) on

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François Bartholomeeusen

Good evening all, On 5 August 2022, a friend gave

11-08-2022 08:16

Josep Torres Josep Torres

Hola.Un muy diminuto Pirenomyceto sobre un tronco

10-08-2022 09:11

Josep Torres Josep Torres

Hola.Un Piremomyceto recogido este pasado domingo

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Mollisia ID
Nicolas VAN VOOREN, 25-05-2017 18:40
Nicolas VAN VOORENHello.
Here is a collection of Mollisia made on a dead branch of Quercus, on soil, with Lachnum virgineum and another Mollisia species (not yet studied). A subiculum is present.
Apothecia Ø 1-2.5 mm. 5% KOH negative.
Ectal excipulum of textura angularis/subglobulosa, with cells 5–18 µm wide, becoming a textura ± prismatica on the flanks (see fig. 2), emerging in pseudo-hairs, up to 42 µm in length. Medullary excipulum of t. intricata, with hyaline hyphae.
Asci 100-110 × 7-8 µm, with crozier, pars spor. ~47-52 µm, apical ring IKI+ (bb).
Paraphyses with a long refractive VB, Ø 2.5–3.5 µm
Ascospores 17–20 (21.5) × 2.8-3 µm, OCI~3, sometimes with a central septum (but not in asci).

I didn't find any species that matches with these characters, so any help will be useful.
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  • message #49013
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Hans-Otto Baral, 25-05-2017 20:27
Hans-Otto Baral
Re : Mollisia ID
Hi Nicolas
 
I do not remember such a species. It reminds me a bit of Mollisia elegantior, but the much larger spores and their much higher oil content exclude this.

Did you study the brown subiculum, are the hyphae thick-walled and 4-6 µm wide?


Zotto

P.S. just detected a collection which seems to be the same, with spores 15-21 x 2.5-3.5:

E. Rubio: Pola de Somiedo, 29-IV-2017, growing on a dense felty brown subiculum on wood of Corylus avellana.

I put both in a directory named "elegantior aff.".
Nicolas VAN VOOREN, 25-05-2017 22:22
Nicolas VAN VOOREN
Re : Mollisia ID
Thanks Zotto.
About the subiculum, I just noted that the wall measures up to 1 µm thick.