21-01-2026 16:32
Gernot FriebesHi,I need your help with some black dots on a lich
21-01-2026 16:48
Gernot FriebesHi,after my last unknown hyphomycete on this subst
20-01-2026 17:49
Hardware Tony
I offer this collection as a possibility only as e
15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
Diaporthale on leaves of Ulmus glabra
Enrique Rubio,
21-01-2023 19:23
Dear allI would like to know your opinion about these small, rounded, blackish, more or less spherical, very small (up to 0.15 mm in diameter), most probably ostiolate but without necks, immersed in overwintered leaves of Ulmus glabra. From its characters it could perhaps fits in the genus Gnomoniella and perhaps in Gnomoniella carpinea although its spores are somewhat wider than those of this species.What do you think?
Many thanks again.
Sorry, I just saw that Gnomoniella carpinea is a synonym of Apiosporopsis carpinea, a fungus that we usually collect on carpinus leaves near the site of the find.
Alain GARDIENNET,
22-01-2023 07:22
Re : Diaporthale on leaves of Ulmus glabra
Hi Enrique,
Indeed, it looks like Apiognomonia carpinicola.
Monod reported hosts other than Carpinus : other Betulaceae (Alnus, Crapinus, Ostrya), but also Acer rubrum and Castanea dentata. I personnaly found it on Corylus maxima.
So, why not Ulmus glabra ?
Best wishes,
Alain
Indeed, it looks like Apiognomonia carpinicola.
Monod reported hosts other than Carpinus : other Betulaceae (Alnus, Crapinus, Ostrya), but also Acer rubrum and Castanea dentata. I personnaly found it on Corylus maxima.
So, why not Ulmus glabra ?
Best wishes,
Alain
Enrique Rubio,
22-01-2023 10:28
Re : Diaporthale on leaves of Ulmus glabra
Merci Alain. In fact I have found it on Acer saccharinum too.