31-03-2026 21:18
Miguel Ángel Ribes
Good evening. oes anyone have the original descrip
31-03-2026 20:57
Stefan BlaserHello everybody, I hope somebody can help me with
26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
31-03-2026 16:20
Mlcoch Patrik
Hello, Please about help with determination. On
31-03-2026 08:19
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
30-03-2026 12:03
William Slosse
Hello all,On 27/03/26, in Kraaiveld in Wingene (Be
On Quercus robur petioles
Elsa Sousa,
07-11-2017 23:57
Is that possible to identify this?
Spores (22) 22.4 - 27.7 (32.1) × (3.1) 3.4 - 4 µm 1-septate
Paraphyses septate
I would appreciate any help.
Thank you very much.
Regards,
Elsa
Peter Püwert,
08-11-2017 02:12
Re : On Quercus robur petioles
Hi Elsa,
in my opinion this fungus belongs to the Rhytismataceae, genus Hypoderma. From the genus I know, unfortunately, only H. commune and rubi, both caulicol.
Greetings Peter.
in my opinion this fungus belongs to the Rhytismataceae, genus Hypoderma. From the genus I know, unfortunately, only H. commune and rubi, both caulicol.
Greetings Peter.
Elsa Sousa,
09-11-2017 00:30
Re : On Quercus robur petioles
Dear Peter,
I suspected about Hypoderma, but can't get to species. I read that this is hard to identify.
This fungus wasn't exactly on petiole, but a bit inside, but still on central leaf nervure.
Thanks for helping.
Regards,
Elsa
I suspected about Hypoderma, but can't get to species. I read that this is hard to identify.
This fungus wasn't exactly on petiole, but a bit inside, but still on central leaf nervure.
Thanks for helping.
Regards,
Elsa
Jason Karakehian,
09-11-2017 14:38
Re : On Quercus robur petioles
I think that is Hypoderma. I don't think that there is a modern key to this genus. There is an unpublished PhD thesis by Paul E. Powell to Cornell University 1974. It is sometimes helpful. It lists H. ilicinum, H. rubi complex and an "H. taxonomic sp. 1" as being on Quercus. I recently tried to determine some material from Florida on Quercus and could not decide between H. ilicinum and H. rubi. I put a tentative name of H. rubi on the specimen.