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
Black discomycete on Rhododendron ferrugineum
Gernot Friebes,
06-06-2018 12:46
this one I collected on a dead branch of Rhododendron ferrugineum. The ascospores measure about 11-11,5 x 3,5-3,8 µm and are filled with numerous oil drops. The asci have croziers and are IKI-. The paraphyses are hyaline and slightly thickened apically. The medulla contains greenish material. Thanks again for your help!
Best wishes,
Gernot
Hans-Otto Baral,
06-06-2018 13:03
Re : Black discomycete on Rhododendron ferrugineum
Did you test KOH for ionomidotic?
Gernot Friebes,
06-06-2018 14:19
Re : Black discomycete on Rhododendron ferrugineum
There is indeed a yellowish/greenish pigment extracted in KOH. Do you have something specific in mind?
Hans-Otto Baral,
06-06-2018 18:24
Re : Black discomycete on Rhododendron ferrugineum
It should be a Cordieritidaceae, and there it is very difficult to give a name.
I have a folder Phaeangella which is a potential name for these fungi. Compare "semilichenia" and P. ulicis. They are quite similar but their DNA is very divergent!
Your fungus will be difficult to distinguish from them by morphology I fear.
How large are your apos?
I have a folder Phaeangella which is a potential name for these fungi. Compare "semilichenia" and P. ulicis. They are quite similar but their DNA is very divergent!
Your fungus will be difficult to distinguish from them by morphology I fear.
How large are your apos?
Gernot Friebes,
06-06-2018 19:58
Re : Black discomycete on Rhododendron ferrugineum
Great, thanks. That does look very similar. The apos are around 0,5 mm in diam.
Best wishes,
Gernot
Best wishes,
Gernot
Hans-Otto Baral,
06-06-2018 21:43
Re : Black discomycete on Rhododendron ferrugineum
Und das war richtig in den Alpen? Wahrscheinlich hat auch daran Guy großes Interesse.
Gernot Friebes,
06-06-2018 21:49
Re : Black discomycete on Rhododendron ferrugineum
Der Fundpunkt ist ± identisch mit den Orbilien, die ich dir heute geschickt habt (nur etwas weiter SW).