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
Hi to everybody
This enigmatic pyreno on Fagus sylvatica old leaves at the sea level (I never seen it at the montaneous level where Fagus is very common in my country) forms blackish, scattered conical, ostiolate perithecia 0.3-0.5 mm in diam. on bleached patches with irregular margins at both sides of the leaf.
The globose to pyriform perithecium is covered by a clypeate structure with an epidermoid texture. Asci narrowly fusiform up to 175 x 4 with a n small refringent apical apparatus only well visible in IKI (IKI negative) or cotton blue. Scolescospores filiform, hyaline, spirally disposed inside the asci, for exemple 150 x 1.
I don't know a good genus for my fungus. Can you help me?
Thanks in advance
Hi Enrique,
Somewhere in Diaporthales... Perhaps around Linospora ?
Good luck !
Alain
Hi Alain
I have considered Linospora but in this genus the ostiole is lateral and no central (as mine) and the peridium is said to be built by a textura prismatica not epidermoidea.
Do you think theses asci are typical for Diaporthales?
Thanks a lot, Alain
A species from Diaporthales ? I don't know. even if textura epidermoidea, apical apparatus, habit are ok, It was just an idea to open a talk.
It's unknwon for me.
Alain
Thanks Alain
It is curious all the leaves of these Fagus in a Botanical Garden are 'infected' by this enigmatic fungus that I never seen at the montaneous Fagus forest...