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
19-02-2026 13:50
Margot en Geert VullingsWe found this collection on deciduous wood on 7-2-
16-02-2026 21:25
Andreas Millinger
Good evening,failed to find an idea for this fungu
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
17-02-2026 17:26
Nicolas Suberbielle
Bonjour à tous, Je recherche cette publication :
Eutypa sparsa?
Mirek Gryc,
14-10-2021 12:50
This is my first genre from this kind so I am asking for understanding. I tried to show all relevant features in the pictures.
Ascomata grew on Fraxinus sp.
Reaction to negative iodine.
Features match the Eutypa sparsa but I have not found information to grow on Fraxinus. From what I read to his basic substrate is: Populus and Salix.
Any aid is welcome.
regards
Mirek
Eduard Osieck,
14-10-2021 15:31
Re : Eutypa sparsa?
Hi Mirek
On Fraxinus the occurrence of E. leptoplaca is more likely although this species shows an amyloid apical ring (but difficult to see, cf. http://www.ascofrance.com/search_forum/27030).
For proper identification some more features are needed: cross section through the stroma (cf. 8th photo in an earlier topic: http://www.ascofrance.com/search_forum/37352), diameter of perithecia, and diameter of papillae (aka ostioles in the key of Rappaz 1987).
Eduard
Mirek Gryc,
14-10-2021 20:46
Re : Eutypa sparsa?
Hi Eduard
This is not an easy to microscopy. The more greater I had a problem with taking photos with my imperfect equipment.
However, you have to believe that after processing samples in KOH saw a beautiful blue reaction.
I showed a few measurements in the pictures.
Diameter of papillae <100µm
Diameter of perithecia <300 µm
I think these features confirm your type but because of the lack of experience I would prefer to hear the opinion of more experienced people.
I place a few more images.
Thank you for tips and help.
regards
Mirek
This is not an easy to microscopy. The more greater I had a problem with taking photos with my imperfect equipment.
However, you have to believe that after processing samples in KOH saw a beautiful blue reaction.
I showed a few measurements in the pictures.
Diameter of papillae <100µm
Diameter of perithecia <300 µm
I think these features confirm your type but because of the lack of experience I would prefer to hear the opinion of more experienced people.
I place a few more images.
Thank you for tips and help.
regards
Mirek
