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10-03-2012 21:58

Karl Keck Karl Keck

Hello mushroom experts,yesterday I found on Lonice

11-03-2012 22:05

Baeza  Yajaira Baeza Yajaira

Hello everyone recently i found this minute apoth

11-03-2012 01:12

Roland Labbé

Bonjour !Voici une planche et une photo macro d'un

11-03-2012 10:03

Jean Pierre Dechaume Jean Pierre Dechaume

Je ne crois à rien, mais les clés de Ellis m'am

19-07-2009 17:42

Mireille Lenne

Bonjour, Toujours Sporormiella mais à 4 cellul

10-03-2012 15:44

Alain GARDIENNET Alain GARDIENNET

Bonjour, Je viens de faire une récolte étonnante

08-03-2012 16:43

Yannick Mourgues Yannick Mourgues

Ci-dessous un Dothideo immergé dans le substrat (

09-03-2012 13:34

Mauricio Marin

HiCollected on tree of shore. Espora 18-20 (21) x

10-03-2012 13:17

Aouali Souhila

Bonjour,Je tente d'arriver au genre, mais sans suc

04-03-2012 21:07

Aouali Souhila

Bonjour,J'ai retrouvé cet ascomycète sur du libe

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Asco on Lonicera
Karl Keck, 10-03-2012 21:58
Karl KeckHello mushroom experts,
yesterday I found on Lonicera xylosteum at a still attached twig of 5 mm diameter small black ascomycetes.
Spores simple septate, constricted at the septum, the two cells of unequal size, with no drops. See attached photos.
I think it might be Trematosphaeria pertusa.
What do you think??
Thanks in advance.
Kind regards,
Karl
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Yannick Mourgues, 10-03-2012 22:36
Yannick Mourgues
Re : Asco on Lonicera
Hi Karl.
I don't think it's Trematosphaeria. Have you seen ascus ? Could you show us a section of the asco ?
I remember Diplodia genus witch has spores like these, but it should be check.
May be someone else will have the good idea.
Yannick
Hermine Lotz-Winter, 11-03-2012 13:00
Hermine Lotz-Winter
Re : Asco on Lonicera
Hallo lieber Karl,


the spores remind me of Amphisphaeria umbrina. I cannot clearly recognize from the picture, how the perithecia are.


Herzlichen Gruß


Hermine
Jaklitsch Walter, 11-03-2012 19:44
Re : Asco on Lonicera
This is most probably Dothidea sambuci
Kind regards, WJ.
Karl Keck, 11-03-2012 22:44
Karl Keck
Re : Asco on Lonicera
Thanks for your answers.
I don't think that it is Diplodia.
Spores of Amphisphaeria umbrina have no constriction.
The tip of Mr. Jaklitsch seems to be the right one.
Can Dothidea sambuci occur on Lonicera? Sambucus and Lonicera are both Caprifoliaceae.
Description and drawing at Ellis & Ellis, page 254, plate 1143, figure 109 fit very well!
I am attaching some photos. The ascomata have a diameter of less than 1 mm.
Dear Hermine, Yannick and Mr. Jaklitsch thank you for your help!?

Kind regards,
Karl
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Alain GARDIENNET, 11-03-2012 23:15
Alain GARDIENNET
Re : Asco on Lonicera

Hi all,
Of course itsn't Trematosphaeria and Amphisphaeria (very different) and  Diplodia (coelomycete), and Walter is right. I suppose with a vertical cut, we should more recognize Dothidea. But your question is good, Karl. I've another one : what is becomen the taxa Dothidea lonicerae ?
Alain
Karl Keck, 12-03-2012 00:18
Karl Keck
Re : Dothidea on Lonicera
Hello Alain,

the description of Dothidea lonicerae Cooke
(http://www26.us.archive.org/stream/syllogefungorumo14sacc#page/242/mode/2up/search/dothidea?) fits too.
There is another description of Dothidea lonicerae Fr.:Fr. but this  seems to be a taxon on leaves of Lonicera.
I don't know the difference between Dothidea sambuci and Dothidea lonicerae Cooke. 
Now I am confused.
I am not able to make a vertical cut, sorry.
Kind regards,
Karl

Karl Keck, 12-03-2012 19:27
Karl Keck
Re : Dothidea on Lonicera
Hello Alain and all,

meanwhile a friend communicated to me that Loeffler (1957), the two taxa Dothidea sambuci and D. lonicerae has synonymized.
Amitiés, Karl
Jaklitsch Walter, 12-03-2012 20:46
Re : Asco on Lonicera
To round up the topic:
Loeffler (1957; Phytopathologische Zeitschrift 30: 349–386) reported D. sambuci also from Lonicera, Viburnum lantana, Corylus, Acer. Petrak also from Cotonesater, Kerria, Cydonia, Rhodotypos, Genista, Fraxinus,..

I found it also on Viburnum lantana, Sorbus aucuparia, Juglans and Euonymus. This means that a fungus identical in morphology occurs on various hosts. However, there is no comprehensive phylogenetic treatment, therefore it is still possible that several cryptic species are hidden behind one morphologically conceived taxon. For the time being the fungus can be called Dothidea sambuci.

To find Dothidea I recommend to examine dead branches attached to the shrubs or trees. 
Regards,
WJ.
Karl Keck, 12-03-2012 22:27
Karl Keck
Re : Dothidea on Lonicera
OK, Dr. Jaklitsch, i will call it Dothidea sambuci, as you propose.

Thank you very much for the complementary informations. 

Best wishes,
Karl
Alain GARDIENNET, 12-03-2012 22:32
Alain GARDIENNET
Re : Asco on Lonicera
Very well, thanks for these answers.
Alain