21-01-2023 19:23
Enrique Rubio
Dear allI would like to know your opinion about th
10-03-2022 23:23
Georges GreiffBonsoir, I hope everybody is well. I wanted to c
21-01-2023 00:10
Stefan JakobssonOn a dead branch attached to a standing Alnus (?)g
19-01-2023 11:11
Salvador Emilio JoseHola buenos días. Hace unos días vi este Ascomy
21-01-2023 11:00
Salvador Emilio JoseHola buenos días.Alguna idea para este Ascomycete
12-01-2023 21:12
Riet van Oosten
Hello, Found and examined by Margot Vullings. On
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.