14-05-2026 05:36
Ethan CrensonHi all, I haven't paid much attention to Lachnu
11-05-2026 12:32
Bernard CLESSE
Pourriez-vous m'aider à identifier cette héloti
13-05-2026 15:26
François Freléchoux
Bonjour,Voici une récolte faite il y a quelques j
12-05-2026 15:41
Nicolas VAN VOOREN
Dear Ascolovers, especially interested in Pezizale
13-05-2026 12:05
Thierry Blondelle
Bonjour à tous,J'aimerais avoir confirmation de c
10-05-2026 23:17
Andreas Gminder
Hello,today we found in a moist steep decidous for
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
27-04-2026 20:52
Lothar Krieglsteiner
Found on hanging tiwg of Olea europaea in dried-ou
11-05-2026 20:22
Lothar Krieglsteiner
on attached twig of standing Ficus caricaquite uns
Orange discs... Orbilia?
Juuso Äikäs,
20-06-2019 14:58
I found these in a small grove, growing on a fallen trunk of a deciduous tree (Alnus incana and Prunus padus were the dominant trees). I've seen some photos and microphotos of Orbilia species and there seem to be similarities, so that would be my uninformed guess.
The spores were tiny, allantoid, about 2.5 x 1 micrometers in size. Photographing was quite difficult as they were spinning in the liquid. The asci were ca. 30 x 3 ?m. Paraphyses mostly capitate, some filiform.
Any thoughts about the genus/species?
Lothar Krieglsteiner,
20-06-2019 18:02
Orbilia delicatula
... as far as the name ist still current (former xanthostigma).
Best, Lothar
Hans-Otto Baral,
20-06-2019 20:47
Re : Orange discs... Orbilia?
We returned to O. xanthostigma by using O. leucostigma for the white taxon, as in old times. Within Europe it is easy to give these two names for the yellow and white populations. In both the curved spores are warted when looking with oil immersion. And they are not forms but very distant species.
Zotto
Zotto
Juuso Äikäs,
20-06-2019 20:59
Re : Orange discs... Orbilia?
OK, so Orbilia xanthostigma it is then. And I guess the spores are reniform rather than allantoid. Thanks to both of you. A new genus and species for me!
Hans-Otto Baral,
20-06-2019 21:01
Re : Orange discs... Orbilia?
Wel, reniform, cashew-shaped, or even allantoid, why not.
Martin Bemmann,
20-06-2019 22:37
Re : Orange discs... Orbilia?
or "comma shaped" as in archaeology:
;-)
Martin
Hans-Otto Baral,
20-06-2019 22:42
Re : Orange discs... Orbilia?
and yes, crescent is another word for this.
Chris Yeates,
21-06-2019 21:43
Re : Orange discs... Orbilia?
Hörnchen - but not squirrel-shaped ;-)