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07-05-2024 19:26

Louis DENY

Bonsoir forum Sur tige de rubus fruticosus de l'a

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Ethan Crenson

A friend found these black gelatnous cups on a twi

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Gernot Friebes

Hello,I failed to identify this anamorph, which gr

19-04-2015 20:20

Enrique Rubio Enrique Rubio

Hi again Could you help me with this paper? NANN

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François Bartholomeeusen

Dear forum members,On April 25 2024, I found one f

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Riet van Oosten Riet van Oosten

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éric ROMERO éric ROMERO

Bonjour, Une question à propos de la réaction a

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Hemiamyloid on leaves
Marja Pennanen, 20-10-2010 13:34
Hello,

I found these on my own yard on (Betula) leaves today.
These are about 0,2-0,5 mm wide:
  • message #13075
Marja Pennanen, 20-10-2010 13:36
Re:Hemiamyloid on leaves
The spores are 15-18x4-5, with two small droplets.
Asci are 100-130x10-12 and hemiamyloid (IKI red).
Paraphysesa are 2-3 micrometers wide and can branch.
  • message #13076
Marja Pennanen, 20-10-2010 13:37
Re:Hemiamyloid on leaves
Ascus tips in Lugol.

I found no Calycellina, that fits.

Marja
  • message #13077
Hans-Otto Baral, 20-10-2010 15:37
Hans-Otto Baral
Re:Hemiamyloid on leaves
Hi Marja

splendid microphoto! This is an Allophylaria, closely related to Calycellina in my opinion. I think it is A. zenobiae (maybe as Conchatium in Index Fungorum). A. nervicola has shorter spores.

Oil drops in spores are usually some minute near each end, but submature spores have one bigger as you figure.

If you look at the excipulum near stip or near margin the cells should be a bit gelatinized (other Allophylarias have more gel).

Zotto
  • message #13078
Marja Pennanen, 20-10-2010 21:44
Re:Hemiamyloid on leaves
Thank you :)

All information is more than wellcome.

I only know Allophylaria vulgaris, which is very common here now for instance on Betula twigs.
I (almoust) know it from it's appearance and haven't studied it for a long time, maybe it's time for a comparision.

This species maybe once again new to Finland-or maybe not...

Marja
Hans-Otto Baral, 20-10-2010 21:52
Hans-Otto Baral
Re:Hemiamyloid on leaves
Probably new. But A. vulgaris is not an Allophylaria, it is a Calycina.

I admit the two genera are quite close....

Calycina vulgaris is inamyloid, can you confirm?

Zotto
Marja Pennanen, 20-10-2010 22:12
Re:Hemiamyloid on leaves
Let's see, if I have a specimen. If I did not collect it, I'll do that later this week.

I've got Lugol only for maybe half a year and haven't used it for this (A. or) C. vulgaris yet.

Marja

Marja Pennanen, 20-10-2010 23:08
Re:Hemiamyloid on leaves
Hello,

Zotto you making me doubt everything I thought I knew. Maybe I'll bring all the species here just to be sure ;)
I had some on the twig, where was R. firma, too.
I can't say, that the fungus I thoght originally as A. vulgaris is inamyloid, but I can't say that it's amyloid either. It's not so obvious, maybe it's hemiamyloid...

Just too tired now, I'll go and get some rest: Marja