14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
12-04-2026 15:52
Gernot FriebesHi,I'm looking for help with this anamorph collect
12-04-2026 12:22
William Slosse
In a dune grassland in Oostduinkerke (Belgium), on
11-04-2026 15:45
Zuzana Sochorová (Egertová)
Please, could anyone send me this paper?Moyne G.,
11-04-2026 13:34
Artem PtukhaHello, I am seeking assistance with the identific
11-04-2026 10:19
Michel Hairaud
Chers amis d'Ascofrance , voici une très bonne no
11-04-2026 10:10
Michel Hairaud
Dear Ascofrance members, here is some very good ne
10-04-2026 23:22
Gernot FriebesHi,ascospores are 1- to 3-septate, approximately
Orbilia on Quercus
Juuso Äikäs,
11-02-2020 22:15
Hans-Otto Baral,
11-02-2020 22:22
Re : Orbilia on Quercus
Hi Juuso
where have you been seeking for a description? This is an interesting collection, and I am not able to tell you a name which I am happy about. You should try a median section and look for the margin if it is completely without any hair-like outgrowths. The microscopy recalls Orbilia carpoboloides (= Habrostictis rubra), but the substrate would be unusual and especially the margin should be distinctly fringed.
Also please look for contents in the living excipular cells .
Zotto
Juuso Äikäs,
12-02-2020 10:24
Re : Orbilia on Quercus
I'm quite bad at making sections but I tried to do some. The spores of O. carpoboloides would seem to fit quite well both in shape and size. I tried to search for paraphyses with mammiform tips (which would apparently be typical for that species) but didn't find any.
Hans-Otto Baral,
12-02-2020 10:52
Re : Orbilia on Quercus
Indeed this looks like hairs. In the excipular cells and also paraphyses I do not see the SCBs typical of carpoboloides. You are no able to photograph an apothecium at higher resolution in order to see if the margin is smooth or not?
Keep a herbarium specimen, maybe someone is interested.
Zotto
Juuso Äikäs,
12-02-2020 14:06
Re : Orbilia on Quercus
Here's a 40x image taken with my "ad hoc stereo microscope" :).
Hans-Otto Baral,
12-02-2020 17:30
Re : Orbilia on Quercus
Thanks! This clearly excludes O. carpoboloides.
Hans-Otto Baral,
14-02-2020 22:07
Re : Orbilia on Quercus
Hi Juuso,
although I do not want to discuss this species in the monograph I would be glad to note the collection data (date, locality, ...). Do you keep a herbarium?
Zotto
Juuso Äikäs,
14-02-2020 22:51
Re : Orbilia on Quercus
I can certainly provide the data (I don't have it at hand at the moment, I can send an email a bit later). I could also post a sample if you'd be interested. I don't have a proper herbarium, just some samples in sealable plastic bags in a drawer.
Hans-Otto Baral,
15-02-2020 09:28
Re : Orbilia on Quercus
Thanks. I have actually no time and at present no reson to study it, the finished monograph does not permit any further expansion. Maybe someone else is interested. A sequence would certianly be interesting.
Hans-Otto Baral,
09-11-2020 22:29
Re : Orbilia on Quercus
For completion: The sequence that Guy gained just mow falls unmistakably to Orbilia obtusispora, which would fit in the spore characteristics.