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11-04-2026 10:42

Una para ID
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, España, recolec

11-04-2026 10:19

Bientôt, un nouveau livre important
Michel Hairaud Michel Hairaud

Chers amis d'Ascofrance , voici une très bonne no

11-04-2026 10:10

An important new book
Michel Hairaud Michel Hairaud

Dear Ascofrance members, here is some very good ne

10-04-2026 23:22

Pyreno on Phragmites australis
Gernot Friebes

Hi,ascospores are 1- to 3-septate, approximately 

10-04-2026 15:51

Botrytis ficariarum & Peronospora ficariae?
William Slosse William Slosse

Hello everyone, On 08/04/26, I found a growth sit

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Slerotinia verrucispora ???
Jac Gelderblom

On bare soil between mosses Ifound an asco I deter

09-04-2026 13:55

Small-spored "Diplodia" on broom (Cytisus scoparius) - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10589176

09-04-2026 10:12

Melanosporalian on attached decayed wood on fallen Carpinus, Denmark - very long-necked
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https://svampe.databasen.org/observations/10587061

08-04-2026 20:33

Gyromitra sp. ?
Vasileios Kaounas Vasileios Kaounas

Found 07-04-26, in Abies cephalonica. Diameter 1,

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Littérature Korf
FRANCIS FOUCHIER

Bonjour , je recherche en pdf cet article: KORF R

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Bitunicate asco on bark of a leaving trunk of Fagus
Enrique Rubio, 21-03-2012 17:32
Enrique Rubio

Hi to all:
These blackish, small (up to 700 microns), gregarious, solitary, globose and semiinmersed pseudothecia  were at 2-3 m high on bark of a leaving Fagus sylvatica. They seem to be ostiolate but I'm not sure.

The spores are finally brownish or gloden brown and inconspicually 1-septate. Asci not unitunicate. Pseudoparaphyses are present.
Have you some idea ?
Many thanks again
Enrique    

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Thomas Læssøe, 21-03-2012 17:46
Re : Bitunicate asco on bark of a leaving trunk of Fagus
how about Pyrenula (lichenized)?


cheers

Thomas
Enrique Rubio, 21-03-2012 17:59
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
Thank you, Thomas. I have been looking at images of Pyrenula and I believe that you are right.
Enrique
Hans-Otto Baral, 21-03-2012 18:42
Hans-Otto Baral
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I have no experience with Pyrenula, but I considered that you have Navicella pileata. Torsten Richter and I investigated this species a bit, and this turned out to be quite difficult because of variation in spore size and number of cells.

Navicella is placed in Pyrenulales. Now, what about the difference to Pyrenula? A thallus only?

But now I see the spores of Enrique's fungus are much smaller than in Navicella. What is nice to see on your images is the difference of living and dead cells: roundish and with a globose drop when alive, angular and with indistnct contents when dead.

Zotto
Enrique Rubio, 21-03-2012 19:33
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
Thank you again, Zotto
Enrique
Hans-Otto Baral, 21-03-2012 20:40
Hans-Otto Baral
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I read that some Pyrenula species react red in KOH in the perithecium. Did you test with KOH?

Pyrenula is said to have Trentepohlia algae (with orange LBs in the cells) in their thallus. Can you find any thallus?

Zotto
Enrique Rubio, 22-03-2012 16:40
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I'm sorry, Zotto. Before could to read your message I already had shot the material