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01-02-2013 18:48

Alain BRISSARD

Bonsoir à tousVoilà plusieurs jours que je m'att

20-07-2012 16:25

Eduardo Benguría

Buenas tardesEste Hypoxylon está cogido en Teneri

02-02-2013 10:30

Nina Filippova

With the key in Nordic Macromycetes this specimen

02-02-2013 16:06

Gilbert MOYNE

Bonjour,Voici un petit Octospora qui me pose bien

03-02-2013 13:10

Ueli Graf Ueli Graf

Hallo, ich habe diesen Asco gestern gefunden auf e

03-02-2013 12:11

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.J'ai des soucis pour identifier ce Lampros

24-01-2013 22:39

Yannick Mourgues Yannick Mourgues

... mais qui a certainement fait trempette par acc

01-02-2013 09:36

Nina Filippova

This cups from pine bark fitted about with descrip

02-02-2013 20:01

Nina Filippova

First identified this specimen as Phaeohelotium no

01-02-2013 23:09

Salvador Tello

Hola.Este ascomiceto crecía en madera de Vitis vi

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Dothideomycete with disarticulating spores
Björn Nordén, 01-02-2013 20:18
We found this species on hard dead wood on a standing ancient Ulmus tree in western
Norway.

It is melanommataceous, perithecia ca 0,3 mm diam, black, numerous over 0.5 dm2, conical, no hairs or anamorph, centrum with long filaments, spores very dark brown, very thick-walled, asci cylindrical, thick-walled in entire length, bitunicate.
3-septate with subconical end cells (4.5-5.1 x 4-4.2 mym) and square to rounded
middle cells, late disarticulating, 15-19 x 4,5-5,5 mym, smooth, no germ slit
or pores apparent.


Suggestions very welcome! 

  • message #21613
  • message #21613
  • message #21613
Alain GARDIENNET, 01-02-2013 23:31
Alain GARDIENNET
Re : Dothideomycete with disarticulating spores
Have you seen disarticulation into ascus or not ?

Perhaps the disarticulated ascpospores are senescent.  

Some genus in Pleosporales show disarticulated ascospores, like Ohleria. But the spores break into asci.
Alain
Björn Nordén, 01-02-2013 23:59
Re : Dothideomycete with disarticulating spores
Yes you are right, i should have remembered, Ive been there before and I have the paper by Samuels, reminds a lot of Ohleria. Thanks!! : )
Alain GARDIENNET, 02-02-2013 00:47
Alain GARDIENNET
Re : Dothideomycete with disarticulating spores
Ok, that's well.
I would be interested by this paper, if you can.
Alain
Björn Nordén, 02-02-2013 15:15
Re : Dothideomycete with disarticulating spores
Hi! Here it comes

Yours

Björn