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27-07-2022 22:36

Orbilia on Viburnum
Philipp Eschmann Philipp Eschmann

Grüezi I found this Orbilia on Viburnum lantana.

28-07-2022 12:35

Dothidotthia ?
Andgelo Mombert Andgelo Mombert

Bonjour à tous, Sur branche morte cortiquée de

28-07-2022 11:34

Psilachnum or some Hyaloscyphaceae on hygric Sorbus wood
Filip Fuljer Filip Fuljer

Hello guys,I recently collected some strange possi

16-07-2022 23:13

Sphaerosporella ?
Ronald Morsink

Hello everyone,I found these small ascomycetes in

15-09-2021 12:41

Scutellinia variornata nom. prov?
Mirek Gryc

Hello allDear forum members, are my suspicions cor

24-07-2022 14:01

Mollisia
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, yesterday I collected this Mollisia.Ascospo

18-11-2012 21:36

Mold on Agaricus xanthodermus
Byrain

I found this mold growing on a old and dried out A

23-07-2022 14:52

Amphosoma resinicola
Elisabeth Stöckli

Bonjour, Sur une branche aérienne de Picea abies

17-07-2022 05:33

Paper request
Gao Hanxing

Hello,I am looking for following paper: (1)Bayer

24-07-2022 10:25

Penicillium cf purpurogenum
Stephen Martin Mifsud Stephen Martin Mifsud

Hello, I recently found a mould growing on a wine

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Diaporthale on Geranium
Enrique Rubio, 08-06-2018 18:33
Enrique RubioHi to everyone
This enigmatic diaporthale makes subepidermial, roundish, blackish, up to 250 microns in diam., perithecia with central short beak on overwintered stems of Geranium pratense at the sea level.
Thes short stipitate asci have a conspicuous refractive melzer negative apical apparatus and the non septate ascospores have polar roundish caps at the poles, only visible with chlorazol blak.
I explored keys on Gnomonia-like fungi with no success.Have you some idea for me?
Many thanks in advanceEnrique
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Alain GARDIENNET, 08-06-2018 19:46
Alain GARDIENNET
Re : Diaporthale on Geranium

Hi Enrique,


This amazing fungus is probably new.


Alain

Enrique Rubio, 08-06-2018 20:13
Enrique Rubio
Re : Diaporthale on Geranium
Hi Alain
Could you suggest me a genus?
Enrique Rubio, 08-06-2018 20:15
Enrique Rubio
Re : Diaporthale on Geranium
First, I tought in Apiognomonia, by the spore morphology, but any septa I have seen. Maybe Gnomoniella?
Alain GARDIENNET, 08-06-2018 20:53
Alain GARDIENNET
Re : Diaporthale on Geranium

Yes, because of a pseudoseptum on Melzer-photo, I thought at Apiognomonia too, but is it really a septum ? I don't think. Find the genus is difficult without molecular data, you know . Gnomoniella ? not impossible. I've no more knowledge than you.


Sorry,


Alain

Enrique Rubio, 09-06-2018 00:55
Enrique Rubio
Re : Diaporthale on Geranium
Yes. I tought this was a septum in Melzer's reagent, but since I never saw it again, I didn't think it was really a septum. Even in chlorazol black it never showed up again.
Thank you for help me, Alain.