24-02-2026 11:01
Gernot FriebesHi,found on a branch of Tilia, with conidia measur
23-02-2026 11:22
Thomas Læssøehttps://svampe.databasen.org/observations/10584971
29-11-2024 21:47
Yanick BOULANGERBonjourJ'avais un deuxième échantillon moins mat
07-02-2023 22:28
Ethan CrensonHello friends, On Sunday, in the southern part of
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
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Margot en Geert VullingsWe found this collection on deciduous wood on 7-2-
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.