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23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

25-05-2026 16:44

François Bartholomeeusen

Hi forum members,During an excursion organised by

26-05-2026 21:25

Dirk Gerstner

Hello everyone, I'm completely stumped by this li

26-05-2026 22:44

Ethan Crenson

Hi all, I think I have Incrucipulum capitatum her

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

25-05-2026 16:35

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

22-05-2026 13:29

Gernot Friebes

Hi,I am curious to hear your opinion on this mater

23-05-2026 18:57

Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

23-05-2026 23:53

Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

22-05-2026 21:35

Steve Clements

Bonjour, I expected this find on old wood on our

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disco on Abies cone
Malcolm Storey, 11-07-2018 13:11
Another disco from years ago. This one on Abies cone scales.

http://www.bioimages.org.uk/html/r162856.htm


Ascospores: cylindric-clavate, 32/3µm, multi-vacuolate and 1-septate.


Paraphyses: filiform, branched, 2µm diam, tips weakly agglutinated.


Ascus tips not staining in Melzer's Iodine.


Excipulum: soft, black, covering hymenium when young.

Many thanks for any comments.

Hans-Otto Baral, 11-07-2018 13:17
Hans-Otto Baral
Re : disco on Abies cone
Looks rhytismatalean to me.
Malcolm Storey, 11-07-2018 15:36
Re : disco on Abies cone
Many thanks again Hans-Otto.
Malcolm Storey, 27-03-2019 14:03
Re : disco on Abies cone
This has been identified as Colpoma crispum. It's more usually found on dead branches of the same host.
Hans-Otto Baral, 27-03-2019 16:18
Hans-Otto Baral
Re : disco on Abies cone
Dear Malcolm

thanks for this result. It is possible, though I think the spores are with 3 µm a bit wide when comparing available data.

Zotto
Malcolm Storey, 27-03-2019 17:53
Re : disco on Abies cone
It was identified by Paul Cannon at Kew. He had the material but I don't know if he measured the spores himself. Some of my measurements have been a bit wider than they should be - perhaps caused by the mounting medium. (I know it's always best to use water!!)
Hans-Otto Baral, 27-03-2019 18:38
Hans-Otto Baral
Re : disco on Abies cone
In water the spores would be wider, but it could be that pressure made the spores wider.