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05-12-2025 17:33

Lachnum sur feuille de chêne
Bruno Coué Bruno Coué

Bonjour, je serais heureux de recueillir votre avi

07-12-2025 09:24

Una Dacrymycetaceae
Castillo Joseba Castillo Joseba

De la pasada semana en Galicia EspañaEn el suelo

06-12-2025 00:19

Literature search (Raitviir Galán)
Viktorie Halasu Viktorie Halasu

Hello, would anyone have this article, please? An

04-12-2025 23:53

Anthracobia key
Malcolm Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

04-12-2025 21:30

literature search
Ethan Crenson

Hello all, I am looking for the following:  Bar

02-12-2025 18:59

Round spores asco
Malcolm Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

03-12-2025 20:02

Godronia sp.
Buckwheat Pete

Hello everyone, does anyone know the genus Godroni

02-12-2025 19:25

Lasiosphaeriaceae
Buckwheat Pete

Hello, can anyone identify this hairy fungus growi

02-12-2025 14:28

Urceolella crispula?
Mirek Gryc

527 / 5 000Hello everyoneThey grew on dead shoots

30-11-2025 12:53

Calycina cf. languida
Edvin Johannesen Edvin Johannesen

White short-stipitate apothecia found on thin twig

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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