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
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
Exosporium tiliae
Thierry Blondelle,
16-02-2026 18:34
Bonjour,La micro de cet anamorphe de Hercospora sur Tilia me pose un problème. Je n'arrive pas à distinguer les conidies des conidiophores car il me semble qu'ils ont sensiblement les mêmes longueurs.
Y a t-il des critères pour les différencier ?
Merci à vous
Thierry B
Mathias Hass,
16-02-2026 20:48
Re : Exosporium tiliae
In my experinece you can clearly see the long brown multiseptate conidiophores of Exosporium tiliae, compared to Helminthosporium oligosporum with short conidiophores and a very compact structure. So I think this is Helminthosporium oligosporum. The conidia are very variable in shape and size. I don't see anything that looks like a conidiophore on your pictures, except the short dark brown things on picture 2. I think all the rest are all conidia. However, there may be other possibilities on Tilia that I'm unware of.
Cheers Mathias
Thierry Blondelle,
17-02-2026 00:03
Re : Exosporium tiliae
Hello Mathias,
You're right. Conidiophores of H. oligosporum are really shorter.
Thanks.
Thierry
You're right. Conidiophores of H. oligosporum are really shorter.
Thanks.
Thierry