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07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

05-09-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour, hi everyone,Do you know where the fungari

05-09-2025 18:53

Robin Isaksson Robin Isaksson

Hi! Spores 1 septate; 12-13 x 3um Hairs 35-75

04-09-2025 20:11

Åge Oterhals

Saccobolus on dear droppings. Can any of you confi

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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

  • message #16743
  • message #16743
  • message #16743
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.

  • message #16748
Alex Akulov, 03-12-2011 23:22
Alex Akulov
Re : Coelomycete on the Ulmus branches
Coryneum compactum and related species descriptions from Sutton, 1975
  • message #16749
  • message #16749
Alex Akulov, 03-12-2011 23:23
Alex Akulov
Re : Coelomycete on the Ulmus branches
Seimatosporium macrospermum description from Sutton, 1980
  • message #16750
  • message #16750
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
  • message #16751
  • message #16751
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
  • message #16753
  • message #16753