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13-05-2026 15:26

François Freléchoux François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

11-05-2026 12:32

Bernard CLESSE Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

10-05-2026 23:17

Andreas Gminder Andreas Gminder

Hello,today we found in a moist steep decidous for

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Lothar Krieglsteiner Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

11-05-2026 13:22

Sylvie Le Goff

BonjourPuis avoir votre avis sur cet ascome, je vo

29-04-2026 10:44

Lothar Krieglsteiner Lothar Krieglsteiner

growing at moist, drying-out soil at the side of a

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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.