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
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
28-10-2025 19:33
Nicolas Suberbielle
Bonjour à tous,Je voudrais votre avis sur cette r
Problematic yellow asco?
Mirek Gryc,
20-05-2020 10:57
Hello all.
I found two collections of this genre yesterday. The first grew on dead shoots Reynoutria japonica. A second group of fruiting bodies found on Helianthus tuberosus. There are small differences between them in the content of drops in the spores but I suspect it is the same species.
The first thought is Cyathicula. The size of the spores matches C. cyathoidea but as you can see the other features are not.
I was also thinking about Hymenoscyphus repandus, which I do not know yet, but it seems to me that the characteristics do not suit him too?
greetings
Mirek
PS: photos in a moment
Mirek Gryc,
20-05-2020 11:00
Re : Problematic yellow asco?
The first collection from Reynoutria japonica
Mirek Gryc,
20-05-2020 11:01
Re : Problematic yellow asco?
Second collection from Helianthus
Hans-Otto Baral,
20-05-2020 11:13
Re : Problematic yellow asco?
Hi Mirek
does your 7th pic show a blue reaction of the excipulum?
Not sure if the two are the same as the paraphysis contents and curvature differ.
I think a Hyaloscyphaceae s.l.
Zotto
Mirek Gryc,
20-05-2020 11:31
Re : Problematic yellow asco?
Hi Zotto
Yes, the blue excipulum reaction is seen in the picture.
The reaction occurred only in one fruiting body. Also, I see several differences between them although the macroscopic features are identical.
I have no idea.
Mirek
Hans-Otto Baral,
20-05-2020 11:49
Re : Problematic yellow asco?
The currved paraphyses of the first remind me a bit of Loricella in my Calloriaceae folder. I cannot clearly see the margin for any hairs.
A blue reaction occurs e.g. in Cistella grevillei or Psilachnum lanceolatoparaphysatum, but all these are probably outruled.
Mirek Gryc,
20-05-2020 12:04
Re : Problematic yellow asco?
The problem is that I haven't seen the hair either. Neither in one nor in the other collection.
Thank you, Zotto.
I will search in the catalogs you suggest.
Mirek
Thank you, Zotto.
I will search in the catalogs you suggest.
Mirek