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18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

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Unknown (lophodermium-like) species on heracleum (new pics added)
Ralph Vandiest, 26-02-2014 22:16
Ralph VandiestHello,

I found this species on heracleum. Size 0,2/0,4mmx0,1/0,2mm, asci 8-spored 47/64x16/21, spores 13/18x6/8µm. Textura angularis and the paraphyses are absent in this stage


Any suggestions?

regards,


Ralph
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Ralph Vandiest, 27-02-2014 18:02
Ralph Vandiest
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
Extra pictures in this link

http://waarnemingen.be/waarneming/view/81993005


PS I have fresh material, if anybody wants to have a look at it, just send me an e-mail and I will send dry material to you  

Ralph Vandiest, 27-02-2014 20:43
Ralph Vandiest
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
Some more microscopic pictures ...


Size of fruiting body is also corrected
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Hans-Otto Baral, 27-02-2014 22:55
Hans-Otto Baral
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
I suppose this is a bitunicate ascomycete. The spore shape with the strong constriction and broader upper part suggests this, also the wonderful ohoto of living asci with the apical thickening lets me think of a "jack-in-the-box"-mechanism.

I have no experience with such fungi. Maybe this is rather a pyrenomycete.

Zotto
Luc Bailly, 01-03-2014 00:38
Luc Bailly
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
Hi all,
I have no idea right now, though I wonder if I haven't seen something similar. There's a young ascus on a photo clearly suggesting a Dothideomycetes, a bitunicate.
You gotta search among Didymella, Mycosphaerella, Venturia and other didymosporous Dothideomycetes. I'll try to have a look tomorrow.
Cheers - LUC.
Luc Bailly, 01-03-2014 15:19
Luc Bailly
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
I have a better idea: just check a bit Psiloglonium and related genera, here for example? Looks like the ascomes are hysteriothecia's.
There are genera with Didymella-like didymospores:

http://studiesinmycology.org/content/64/1/49.full.pdf+html

My two cents.
Cheers - LUC

EDIT: from informal email exchanges, it appears Psiloglonium have a much thicker peridium, so scrap that.
I fear that's one of those many species which need further samples to be studied and sequenced by professional mycologists and labs :/
Ralph Vandiest, 01-03-2014 19:02
Ralph Vandiest
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
Hello Luc,


Thanks for the info. I will have a look at this genus tonight.


PS I saw you're from Belgium. Where. i from Vossem (Tervuren)

regards
Luc Bailly, 02-03-2014 01:00
Luc Bailly
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
You're welcome, Ralph.

I'm from Roche-à-Frêne, Manhay, province Luxembourg, and I'm active member in the Mycologues du Luxembourg Belge, Société Botanique de Liège (mycology section) and AMFB. And some French societies.

More off-forum.

Cheers - LUC.
Björn Wergen, 16-03-2014 21:59
Björn Wergen
Re : Unknown (lophodermium-like) species on heracleum (new pics added)
Hi friends,

here are further results of the "lophodermium-like" species from Ralph. It is not a Dothideomycete, but I am thinking of Lecanoromycetes.

I do not have an idea until now. But I will study more literature to find it out.

regards,
björn
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