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15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca
Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

14-11-2025 16:26

Small species on Cytisus scoparius
Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 20:25

Cryptosphaeria ligniota?
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.
Josep Torres Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request
Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda
ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil
Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf
Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.
Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Phacidium
Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

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Pyreno on Alnus glutinosa bark
Enrique Rubio, 11-05-2012 19:59
Enrique RubioDear friends:
I'm lost with this black pyrenomycete with valsoid perithecia (or pseudothecia?) inmersed under the bark of Alnus glutinosa branches. Ostioles are difficult to see in the transversaly cracks of the bark.
The cilyndrical asci seems to have an apical apparatus Mlz.  negative, but I'm not sure that they are unitunicate because the olive-brownish, multiseptate, transversally and obliquely septate ascospores.
Have you some idea?   
Many thanks in advance
Enrique
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Jacques Fournier, 11-05-2012 20:08
Jacques Fournier
Re : Pyreno on Alnus glutinosa bark
Hola Enrique,
you always come with interesting fungi!
I suggest Dirithium as a possible genus for your find. Dirithium lividum has similar habit, asci and ascospores, you should check literature.
Cheers,
Jacques
Enrique Rubio, 11-05-2012 20:47
Enrique Rubio
Re : Pyreno on Alnus glutinosa bark
Yes! I have just read Barr's paper on Mycotaxon and I think you are right. This fungus was previously collected in Spain on Pinus halepensis, Juniperus phoenicea subsp. eumediterranea, Pistacia lentiscus, Buxus sempervirens and, Rosmarinus officinalis (SIERRA, 2006).

SIERRA, MD. (2006)CONTRIBUCIÓN AL ESTUDIO DE LOS ASCOMICETES BITUNICADOS DE CATALUÑA. Acta Bot. Barc., 50: 5-434 Barcelona


Many thanks again, Jacques 
Björn Wergen, 13-05-2012 13:46
Björn Wergen
Re : Pyreno on Alnus glutinosa bark
This one is quiet interesting. I have never heard of Dirithium before...

regards,
björn