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15-06-2024 13:51

Tarzetta determination
Thomas Flammer

Just downloaded the english Key for Tarzetta. I h

12-06-2024 22:08

Sareomycete?
Stip Helleman Stip Helleman

Dear all, a week ago this cushen formed species w

12-06-2024 07:41

Mollisia on Jackrogersella multiformis
Juuso Äikäs

Yesterday I found some white Mollisias growing on

08-06-2024 14:44

Coussin blanc sur sphagnum sp
Louis DENY

Sur sphagnum sp dans la tourbière des Pîles à S

09-06-2024 19:34

von Arx 1952
Spooren Marco Spooren Marco

Hello, Does someone has a PDF of Von Arx"article

15-07-2012 10:31

Bluish ascomycota
Edit Szilvásy Edit Szilvásy

Dear Forum, Yesterday I found a small blue-green

05-06-2024 21:57

No idea...
éric ROMERO éric ROMERO

Bonjour, Toute piste sera la bienvenue... ApothÃ

04-06-2024 21:26

Phaeohelotium fagineum ?
Thierry Blondelle Thierry Blondelle

Bonjour,Je vous soumets cette récolte sur faîne

08-02-2018 06:17

Rhytidhysteron dissimile ?
Ethan Crenson

In New York City on unknown decorticated hardwood.

23-11-2023 09:46

bitunicate, staining substrate purple - Leptosphaeria purpurea?
Lothar Krieglsteiner Lothar Krieglsteiner

.. found 19.11.23 in the Schwäbische Alb, Germany

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interesting Lophiostoma on Fagus
Björn Wergen, 15-04-2012 18:31
Björn WergenHi all,

I have found a very interesting lophiostomoid fungus growing on decorticated Fagus branch. It has small 0,3-0,6 mm broad perithecia with a typical lophiostoma-ostiolus. Spores are 24-29x4-4,5µm, first with a medium single septa, then with 3-4 septations, hyalin, mature spores very pale brown, with a distinct hyaline sheath surrounding a whole spore and acute endings. 
Asci 70-100x6-8µm, with 8 +/- biseriate spores.

Substrate: Fagus (or Quercus, but I think it was Fagus, decorticated at all).

What can this be? I have tried Chesters&Bell and Barr, watched some photos made by Alain and so on, but there is no matching species. Macroscopically Navicella pileata is similar, but it has very different spores...

I hate mycology...sometimes :D

regards,
björn
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Alain GARDIENNET, 15-04-2012 23:16
Alain GARDIENNET
Re : interesting Lophiostoma on Fagus
Hi Bjorn,
It looks like Lophiotrema neohysterioides, but ascospores of this species are given without sheath.  And your one seems to have a L/l more important.  Perhaps more closed to Lophiostoma vigheffulensis ? Else, Ive no idea.
Good research !
Alain
Björn Wergen, 16-04-2012 00:46
Björn Wergen
Re : interesting Lophiostoma on Fagus
Hi Alain,

I have the same name on my list: L. vigheffulensis (between L. vigheffulensis and L. winteri). But the sheath is something very strange for this genus, isn't it? 

Thanks a lot.

regards,
björn