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14-09-2010 09:43

Marja Pennanen

Hello, as I mentioned I found something besides t

13-09-2010 09:07

Marja Pennanen

Hello, these are tiny, 0,1-0,2 mm wide. There

13-09-2010 08:39

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Une amie m'a transmis une récolte d'un

08-09-2010 21:24

Marja Pennanen

Hello, while looking for the pink Mollisia I natu

08-09-2010 14:19

Jacky Launoy

Bonjour à tous, j'ai une question pour les spéc

07-09-2010 12:01

Piet BORMANS Piet BORMANS

Est-ce que quelqu'un peut m'aider à déterminer c

03-09-2010 11:45

Marja Pennanen

Hello, yesterday evening I decided to go and pi

02-09-2010 16:04

Marja Pennanen

Hello, I found these on yesterday, too. They wer

02-09-2010 10:38

Marja Pennanen

Hi, I found these on some Carex yesterday. The

02-09-2010 00:32

Martin Bemmann Martin Bemmann

Hi, this one is from a dead branch of oak, stil

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Very small perithecia
Stefan Blaser, 28-02-2013 21:28
Hello everybody

It would be great if someone had an idea about this pyrenomycete.

It is on bark of a small branch of deciduous wood. The Perithecia are only 0.2-0.3 mm in diameter and about 0.2 mm high, black and rounded to conical. There is no pore visible.
The spores are rather special, thats why I think it could be identified:
Spores 60-85 x 3.5-4.5 micros, broadly rounded at one end and tapering to the other, rather pointed end, giving them a slender club-shape (see Photos), hyaline with about 6-8 transversal septa and filled with small oildrops, which makes the Septation difficult to see. The pointed half is sometimes strongly bent. Asci 110-125 x 10-12 micros. Paraphyses(?) densely packed, septate.

Thanks for any Ideas
Stefan
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Jacques Fournier, 28-02-2013 22:23
Jacques Fournier
Re : Very small perithecia
Hi Stefan,
at first glance I think you should look into Tubeufia or something close.
Jacques
Stefan Blaser, 28-02-2013 23:02
Re : Very small perithecia
Hi Jacques
Tubeufia seems a good Genus to start with. Thanks a lot.
Stefan
Björn Wergen, 01-03-2013 11:40
Björn Wergen
Re : Very small perithecia
Hi Stefan,

why not Tubeufia corynespora? If no setae are found, I think this should fit.

regards,
björn
Stefan Blaser, 02-03-2013 07:44
Re : Very small perithecia
Hallo Björn

Danke für deinen Hinweis. Hättest du eventuell Literatur zur Gattung (Gattungsschlüssel?), oder zur Art Tubeufia corynespora für mich?

Liebe Grüsse
Stefan
Karl Keck, 14-03-2013 22:53
Karl Keck
Re : Very small perithecia
Hoi Stefan,

schau mal hier: / look here:
http://www.mycologia.org/content/96/3/667.full.pdf+html?
Da findest Du auch einen Schlüssel zu Tubeufia-Arten.
There you'll find a key to Tubeufia species.
Grüezi,
Karl


Stefan Blaser, 15-03-2013 08:36
Re : Very small perithecia
Hallo Karl

Vielen Dank für deinen Hinweis. Die Arbeit hatte ich auch schon gesehen. Leider ist da Tubeufia corynespora nicht ausgeschlüsselt (Die wird neu als Thaxteriella corynespora gehandelt). Ich habe die Art nun Anhand von Munks Originalbeschreibung als Tubeufia corynespora bestimmt.

Liebe Grüsse
Stefan