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Sur bois mort au bord d'un torrent
Yannick Mourgues,
12-11-2020 01:10
Trouvé sur bois mort très dégradé d'Abies alba, à côté et dans un torrent de ph acide.
Asques IKI+ issus de crochets.
Paraphyses cylindriques larges de 2,6-2,9 µm avec guttules.
Spores 7,8-11,8 x 2,6-3,6 µm avec Q=2,5-3,7 pour N=28.
Sous-hymenium de textura intrica.
Excipulum de textura globulosa avec des cellules colorées par un pigment intracellulaire brun de plus en plus foncé vers l'extérieur.
Une idée ?
Yannick
Hans-Otto Baral,
12-11-2020 08:18
Re : Sur bois mort au bord d'un torrent
A Mollisia I think. You can test if the VBs in the paraphyses provoke a yellow reaction as soon as they get in contact with KOH. Various Mollisiaas do that, many others not. Is this substrate flooded after heavy rainfalls?
Yannick Mourgues,
14-11-2020 15:45
Re : Sur bois mort au bord d'un torrent
Thank's a lot Zotto.
The substrate is very degraded wood of abies alba at the water's edge and on a pile of branches emerging in the middle of the stream.
KOH + apo is Yellow.
Yannick
Hans-Otto Baral,
14-11-2020 17:20
Re : Sur bois mort au bord d'un torrent
O.k. that could somebody help who is good in Mollisia. There are species adapted to flooding by streams, but I would need to consult my folders and I know it is quite difficult. The characters of this are about those of M. cinerea but that does not turn yellow in KOH. - I must correct: your spore mesurements distinctly exceed those of M. cinerea.
Yannick Mourgues,
14-11-2020 20:24
Re : Sur bois mort au bord d'un torrent
There are many species with such spore's sizes and yellow apo in KOH...
Very difficult.
To be sequenced too...