12-06-2026 14:50
François Freléchoux
Bonjour, Voici la brève description d'une Mollis
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
11-06-2026 19:01
William Slosse
Hello all,In an attempt to make a culture of a sus
11-06-2026 19:03
Nicolas VAN VOOREN
Chers membres d'Ascofrance,Le site sera placé en
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
Disco on Rumex
Chris Yeates,
02-09-2021 18:17
Bonjour tous
This is a discomycete the colour of milky coffee, up to 0.5mm in diameter. The margin is slightly fringed. Growing with Stictis stellata and a yet to be explored pyrenomycete. On dead Rumex stem (probably R. obtusifolius).
Excipular cells rather thick-walled often with a globose guttule, in the living state active ?through Brownian motion. Paler apical cells forming the fringed margin.
Asci 8-spored, with croziers, apex IKI- with Baralsche Löhsung.
Ascospores small, ellipsoid, slightly curved in some views, consistently with two large guttules; 4.2-5.4 x 1.8-2.2µm.
As ever comments/suggestions welcome.
Chris
Peter Thompson,
02-09-2021 18:23
Re : Disco on Rumex
Hello Chris,
Dasyscyphus castaneus? Parasitic on Stictis spp.
With Best Wishes,
Peter.
Dasyscyphus castaneus? Parasitic on Stictis spp.
With Best Wishes,
Peter.
Stip Helleman,
02-09-2021 21:04
Re : Disco on Rumex
Yes Peter and Chris a very good sugestion, I was thinking in Unguiculariopsis for mycroscopy of the hymenial elements and the excipulum. I think you might find it in Zotto's drive there. There is no valid combination made to my knowledge.
cheers,
Stip
Chris Yeates,
02-09-2021 21:53
Re : Disco on Rumex
Thank you both
I doubt I would have managed to run this down without your help. I also doubt I wiould have considered Dasyscyphus and am a little surprised that Graddon saw the hairs as "granulis minutis dense incrustatis" they looked smooth to me, even under oil - I'll have another look.
I'm always amazed at how these parasites with rather specific hosts find them. Although this site is perfect for Stictis with a jungle of Epilobium, Urtica, Rumex, Filipendula etc. and I have collected Stictis stellata very close by, in quantity and on - rather surprisingly - dead leaves of Phormium tenax.
Thanks again, Chris