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Mot de passe perdu? S'inscrire

21-08-2018 13:18

Em rama de Fagus
Castillo Joseba Castillo Joseba

De ayer en bosque de fagus Me pareció una Hypocr

20-08-2018 22:51

Gnomoniaceae on Rubus
Mlcoch Patrik Mlcoch Patrik

Hi, I would like help with determination.Perithec

15-08-2018 21:56

Hymenoscyphus sur pétiole
Andgelo Mombert

Bonsoir à tous,Sur pétioles et nervures de feuil

11-08-2018 19:10

fungus on rabbit dung
Sven Heinz Sven Heinz

Hello together, does anyone have any idea what th

08-08-2018 19:44

Godronia sp.
Andgelo Mombert

Bonsoir à tous,Apothécies de 0,5-1 mm de diamèt

17-08-2018 21:50

Bryocentria octosporelloides literature request
Greiff Georges

Hello, Today, on two Fraxineus trees about 100m a

16-08-2018 16:08

Pachyella pseudosuccosa posible
Blasco Rafael Blasco Rafael

Hola, he recogido esta muestra sobre tronco de Abi

15-08-2018 15:45

Scutellinia sp. on Abies
Gernot Friebes

Hi,we collected this Scutellinia a few days ago on

15-08-2018 10:24

Rhytismatales on Picea
Gernot Friebes

Hi,found on the bark of an old Picea tree at appro

13-08-2018 09:43

literature request
Pintos Angel Pintos Angel

hello, anybody has?Barr ME, Cannon PF (1994) Calos

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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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  • message #53726
  • message #53726
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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.