08-11-2025 00:29
Francois Guay
I found this species in Quebec, Canada, on herbace
04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
No idea...
éric ROMERO,
05-06-2024 21:57
Bonjour,
Toute piste sera la bienvenue...
Apothécie n'excédant pas 0,8mm, blanc pur, poils courts peu visibles, courtement stipité (0,2 à 0,3mm), bien « ancré » dans le support, des éléments de celui-ci y étant arrachés lors du prélèvement.
Asques octosporés cylindriques hyalines à crochets +, IKI -, 55-70 X 8,5-9,2µ.
Paraphyses hyalines, filiformes à légèrement lancéolés, se divisant à divers niveaux, septées, parfois guttulées, 40-50 X 2-3µ.
Excipulum ectal type textura prismatica.
Poils hyalins, septés (3-4 septa), guttulés, incrustations hylines et « légères » sur la paroi externe, sans modification après traitement au KOH.
Spores hyalines, cylindriques/elliptiques à réniformes, 7-9 X 2,5-3,6µ.
Les apothécies montrent un aspect « glacé » sous le microscope si l'on fait attention à ne pas « l'écraser » lors de la préparation.
Hans-Otto Baral,
06-06-2024 08:41
Re : No idea...
Could you please tell us the substrate and origin of the collection?
Is it possible to give a range of mature apothecia, e.g. 0.3-0.8 mm?
It seems the dead immature asci have a slight apical wall thickening, which disappears in mature dead asci.
The hairs have a little granulation but are principally smooth. Psilocistella would be a name to apply what comes in my mind.
éric ROMERO,
06-06-2024 14:22
Re : No idea...
Hello,
Thanks zotto, I forgot those important details...
Find in a biological reserve in Aslace (Vosges - France), alt 980m, on softwood (Picea or Abies) very wet (imbu en Français).
The matures apothecia I studied were between 0,5 - 0,8 mm. I don't know if there were smaller ones, but I can have a look.
It will be probalbly sequenced for the inventory of the reserve.
éric
Hans-Otto Baral,
06-06-2024 17:23
Re : No idea...
Thanks! I just saw a little similarity with Ambrodiscus pseudotsugae but the illustration I have once made differs in the ascus wall (folder Hyaloscyphaceae).
éric ROMERO,
07-06-2024 17:50
Re : No idea...
Thanks a lot, éric.