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
Cryptodiscus on fern stem?
Edvin Johannesen,
12-11-2019 14:18
Hi! I have a very small Cryptodiscus-like specimen on a fern stem. Ascomata 0.2-0.3 mm in diam. The shown spore measures (in KOH) ca. 45x5 microns. Septate, but hard to see how many septa.
I have not come across a Cryptodiscus on ferns. Am I in the right genus or is this another Ostropales?
Thanks for any hints.
Edvin
Hans-Otto Baral,
12-11-2019 16:05
Re : Cryptodiscus on fern stem?
Hmm,this needs at least a phot of an ascus and a test in Lugol: in Cryptodiscus and Karstenia the entire hymenium gets colorated.
Peter Püwert,
12-11-2019 17:45
Re : Cryptodiscus on fern stem?
Edvin Johannesen,
12-11-2019 18:08
Re : Cryptodiscus on fern stem?
The entire (sub) hymenium is staining bluish-green in Lugol. See photo of this and a few photos of spores and asci in water.
Edvin Johannesen,
12-11-2019 18:09
Re : Cryptodiscus on fern stem?
A couple of shots using phase contrast.
PB120129-0001.JPG
PB120129-0002.JPG
Hans-Otto Baral,
12-11-2019 18:21
Re : Cryptodiscus on fern stem?
So Peter's idea seems to be good!
Edvin Johannesen,
12-11-2019 18:31
Re : Cryptodiscus on fern stem?
So - K. idaei, then?
Thanks to both :)
Hans-Otto Baral,
12-11-2019 20:17
Re : Cryptodiscus on fern stem?
Yes, it seems so.
Edvin Johannesen,
12-11-2019 20:19
Re : Cryptodiscus on fern stem?
Thanks!