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05-05-2026 22:40

Gernot Friebes

Hi,I believe this is a Plagiostoma growing on a Sa

04-05-2026 18:13

Stephen Martin Mifsud Stephen Martin Mifsud

ID request for what seems to be a true aquatic fun

04-05-2026 16:39

Stephen Martin Mifsud Stephen Martin Mifsud

ID request: This specimen was collected in Malta o

28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

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Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,(España) re

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Castillo Joseba Castillo Joseba

Me mandan el material seco, recolectado en dunasLo

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Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

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Pauline. Penna

Bonjour  Please can someone help me with this id

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Thierry Blondelle Thierry Blondelle

Bonjour à tous, Une récolte sur bouse séchée d

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stream discomycete
Chris Yeates, 11-10-2013 17:11
Chris YeatesBonsoir tous
collected a couple of week ago, and although I have kept dried material I did not have a lot of time to examine this fresh, so I hope what I can show here is sufficient. This fungus was on a small branch which was mostly submerged in a local stream; it was fruiting above the water level, but the wood was totally saturated.
In the field I thought I might have a Apostemidium or similar but the spores immediately removed that possibility. All these photographs are in water and of living material. The spores showed mostly two clear drops, and the paraphyses had string-of-beads like VBs.
Ascospores measured 9.6-14.9 x 3.7-5µm
any suggestions welcome
cordialement
Chris
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Brian Douglas, 11-10-2013 19:33
Brian Douglas
Re : stream discomycete
Cudoniella clavus or similar?

I've collected something similar myself (though without good vital microscopy) from a long in a stream in Exeter, and when cultured and sequenced it turned out to belong to that group, closely related to a large number of morphologically diverse aquatic hyphomycete species.

My collection was only very minutely stipitate to sessile.  The paraphyses content would also fit with Zotto's illustrations (I think).

Hope that provides a starting point at least!

Cheers,

Brian

Hans-Otto Baral, 11-10-2013 19:50
Hans-Otto Baral
Re : stream discomycete
I agree with this idea. The spore width excludes H. vernus which may occur also in autumn, only H. imberbis might be possible. But the convex hymenium and the rather long spores fit clavus.

Did the apos have a very short stalk?

Zotto