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09-07-2020 00:39

Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

07-07-2020 13:34

Markov Sergey

I found this peziza sp. on loamy soil - on the gro

08-07-2020 19:01

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je ne remets plus la main sur mon tiré-à

08-07-2020 20:29

Juuso Äikäs

These were growing on a dead grass stalk in a fore

08-07-2020 16:47

Chris Yeates Chris Yeates

Bonjour tous While searching for the downy mildew

08-07-2020 18:21

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en mdera si

08-07-2020 10:59

Joanne Taylor

Hi there,Does anyone have a copy of the following

07-07-2020 21:07

Lieve Deceuninck Lieve Deceuninck

Dear members of this forumCould this find be Cheil

08-07-2020 16:41

Thomas Læssøe

Suggestions on this one would be very welcomesee:

06-07-2020 17:11

Thomas Læssøe

see: https://svampe.databasen.org/observations/10

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Pseudomassaria?
Enrique Rubio, 13-04-2012 18:50
Enrique RubioHi to all:
We have collected these small perithecia (or pseudothecia?) up to 0.5 mm in diam. inmersed under the bark of branches of indeterminate hardwood (Acer or Prunus, not Tilia). Ostioles are very nconspicuous.

The spores are very unequally 2-celled. Asci seem to have a very inconspicuous apical apparatus but I'm not sure. They are Melzer negative.
I think in the genus Pseudomassaria but their asci are described as Melzer positive...
What do you think?
Many thanks again 

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Yannick Mourgues, 13-04-2012 19:26
Yannick Mourgues
Re : Pseudomassaria?
Hi Enrique !
Very nice pictures !
Have you tried Barr's key on the genus Pseudomassaria in Mycologia 56 (6), 1964. Page 843 ?
You can read it on Cyberliber.
Yannick
Enrique Rubio, 13-04-2012 19:51
Enrique Rubio
Re : Pseudomassaria?
Hi Yannick.
Yes. I have read Barr's manuscript but I continue without seeing the light!


Thank you
Enrique
Alain GARDIENNET, 13-04-2012 22:17
Alain GARDIENNET
Re : Pseudomassaria?
Why not Pseudomassaria chrondrospora ? Because of K- ? It would have been a good suggest else. Apical ring is small and refractive, so perhaps you haven't seen amyloid reaction ?
Alain
Yannick Mourgues, 13-04-2012 23:17
Yannick Mourgues
Re : Pseudomassaria?
Alain, as-tu connaissance de récoltes sur un autre support que Tilia ?
Yannick
Alain GARDIENNET, 14-04-2012 09:13
Alain GARDIENNET
Re : Pseudomassaria?
Non, pas à ma connaissance. Je regardais les photos d'Enrique dans le Melzer, et ça reste énigmatique. Mais peut-être que c'est autre chose que P. chrondrospora...
Dans les Hyponectriaceae apiosporés J-, il y a les Apiothyrium, et ce n'est pas cela, et certains Pseudomassaria qui ne collent pas non plus avec celui-ci. C'est pourquoi je m'interrogeais sur l'amyloïdité de cette récolte.
Bonne journée,
Alain
Enrique Rubio, 14-04-2012 12:15
Enrique Rubio
Re : Pseudomassaria?
Cher amis:
Je suis bien sur que le Melzer est negative et qu'il n-y-a pas des Tilia
J'ai vu  á ce link http://www.springerimages.com/Images/RSS/1-10.1007_s13225-011-0104-2-8
des images de P. chondrospora semblebles a mon recolte. A le pied de page ont dit que les asques sont IKI (-).

Avez vous le suivant article?: Hyde, K.D., Frohlich, land Taylor, lE. (1998a). Fungi from palms. XXXVI. Reflections on unitunicate ascomycetes with apiospores. Sydowia 50: 21-80. Peut etre les images sont de ce travail.
Merci de votre aide.
Yannick Mourgues, 14-04-2012 12:57
Yannick Mourgues
Re : Pseudomassaria?
Enrique Rubio, 14-04-2012 18:09
Enrique Rubio
Re : Pseudomassaria?
Thank you, Yannick
Enrique Rubio, 17-04-2012 16:43
Enrique Rubio
Re : Pseudomassaria?
Hi to all:

Finally I confirm you that the sustrate is a Tilia platyphyllos single tree  situated to a 100 m of the lying branches that I have found.
By the other hand Walter Jaklitsch (pers. com.) thinks my collection fits well with Pseudomassaria chondrospora as Alain was thinking too.
Many thanks to all
Enrique