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05-11-2011 10:55

Ismael Wind

On Larix i found 2 specimens of ascocoryne. The fi

08-11-2011 16:08

Yatsiuk Iryna Yatsiuk Iryna

Hello, forum! There is Bisporella collected on Po

10-08-2011 20:09

Yannick Mourgues Yannick Mourgues

Bonjour.J'aimerai vos avis sur cette espèce.Ascom

06-11-2011 15:18

Martin Bemmann Martin Bemmann

Hello,is someone able to provide this paper?Gams&a

06-11-2011 12:33

Javier Ormad Javier Ormad

Hola a todos.Os presento un posible anamorfo ¿?,

05-11-2011 17:38

Bernard Declercq Bernard Declercq

Hi,I recently collected a discomycete on Hieracium

05-11-2011 12:10

Iznova Tatjana

Bonjour, cher colleagues :) Votre aide est tres n

04-11-2011 19:13

Alessio Pierotti Alessio Pierotti

Durante la revisione dell'Erbario Crittogamico Ita

04-11-2011 18:09

Gernot Friebes

Hi,does somebody have the book "Microfungi occurri

30-10-2011 23:17

Ismael Wind

Hello,I'm having trouble identifying this asco. It

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Coelomycete on the Ulmus branches
Alex Akulov, 03-12-2011 17:39
Alex AkulovDear Friends
Did you know the species of coelomycete, photos of which are presented below?
Personally, I have no idea what it is. Spores are very abundant and formed on the thin dead twigs of Ulmus still attached to the tree.

Grateful before,
Alex

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Martin Bemmann, 03-12-2011 22:05
Martin Bemmann
Re : Coelomycete on the Ulmus branches
Hi Alex and René,,

a close relative seems to be the Genus Coryneum. C. compactum is reported by Sutton (1980: 352) from Ulmus bark, though the conidia there are shorter as well.

Best regards,

Martin
  • message #16747
Alex Akulov, 03-12-2011 23:20
Alex Akulov
Re : Coelomycete on the Ulmus branches

Dear Friends


Thank you for advise very much!


I was thinking about species, about which you wrote me.
I think it's something else. What do you think about Exosporium ulmi Erikss., Mykol. Zentbl. 1: 35 (1912)?

Please look at the description of this species in the attached file. Size of spores corresponds quate good, the septation character - in some extent. Unfortunately, I do not have the opportunity to find the original article, where this species has been described. It is possible, more in detail description and iconotype is present there.

Alex

P.S.
Below I send also the description of Coryneum compactum and Seimatosporium macrospermum which I have.

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Alex Akulov, 03-12-2011 23:22
Alex Akulov
Re : Coelomycete on the Ulmus branches
Coryneum compactum and related species descriptions from Sutton, 1975
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Alex Akulov, 03-12-2011 23:23
Alex Akulov
Re : Coelomycete on the Ulmus branches
Seimatosporium macrospermum description from Sutton, 1980
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Alex Akulov, 03-12-2011 23:38
Alex Akulov
Re : Coelomycete on the Ulmus branches
Yes!
I'm pretty sure I know this species!
What do you think about Stigmina pulvinata (Kunze) MB Ellis (= Coryneum pulvinatum Kunze)? Below I attach a description and illustration of this species from Ellis, 1976. In my opinion it fits wonderfully :-)

Alex
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Martin Bemmann, 03-12-2011 23:44
Martin Bemmann
Re : Coelomycete on the Ulmus branches
Yes Alex, this looks promising! The tendency of the conidia to septate muriformously is clearly to be seen in your micros. The amplitude of their length fits as well.

Regards

Martin
Alex Akulov, 04-12-2011 00:17
Alex Akulov
Re : Coelomycete on the Ulmus branches
Thank you, Martin
If I understood correctly, in 1975 Sutton noted that Stigmina pulvinata is doubtful species. A single studied sample of this species (France, vicinities of Paris, 1840) collected from Ulmus really was Stigmina compacta (= Coryneum compactum). My sample is true Stigmina pulvinata sensu Ellis (which is now considered to be the species-artifact)!

I'm at a loss, what I need to do with this find, to bring the work to the end. Coryneum is not "my" group of fungi and I had no intention of working with her deeply. And at the same time, losing this data would be unforgivable.

Alex
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