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02-08-2025 12:35

Hymenoscyphus albidus ?
éric ROMERO éric ROMERO

Bonjour tous, J'ai trouvé sur pétiole de Fraxin

02-08-2025 17:21

Pleomassaria protrusa description
Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche la description et la planche

30-07-2025 20:52

apo on Pteridium aquilinum
Bohan Jia

Hi together,  I've been looking posts in AscoFra

30-07-2025 10:12

Asco1 sur crotte de mouton
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

31-07-2025 16:32

Carbophilous discomycete - Anthracobia pseudorehmii?
Andreas Gminder Andreas Gminder

Dear collegues,today I found on a very fresh fire

30-07-2025 18:06

Orbilia dryadum?
Stefan Jakobsson

On a decorticated twig of Alnus incana on moist so

29-07-2025 18:59

Ayuda con esta
Castillo Joseba Castillo Joseba

Me mandan el  material seco de Galicia, España,

28-07-2025 12:34

Capronia
Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

28-07-2025 04:59

identification?
Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

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Karstenia clematidis (?) sur Clematis vitalba
Bernard CLESSE, 30-01-2018 18:04
Bernard CLESSEBonsoir à toutes et tous,

Trouvé récemment ce que je pense être des Karstenia clematidis sur grosse liane morte de clématite des haies (Clematis vitalba).

Qu'en pensez-vous ?

Bernard
  • message #52072
  • message #52072
  • message #52072
Hans-Otto Baral, 31-01-2018 08:05
Hans-Otto Baral
Re : Karstenia clematidis (?) sur Clematis vitalba
It looks like K. idaei, but I do not know K. clematidis - did you compare the two species?
Bernard CLESSE, 31-01-2018 08:24
Bernard CLESSE
Re : Karstenia clematidis (?) sur Clematis vitalba
Hi Zotto,

Thank you for your message ! In fact, I am looking for a key of the genus Karstenia including Karstenia clematidis because I simply saw on the web the existence of this species on Clematis.


Would you have this key?


Thank you very much in advance!

Bernard 

Hans-Otto Baral, 31-01-2018 09:44
Hans-Otto Baral
Re : Karstenia clematidis (?) sur Clematis vitalba
haha. No, I only have my key and it contains only what I know. Other keys I do not remember. It is not so simple to go after the substrate because K. idaei occurs on everything.

I read in Sherwood 1980 that the spores of clematidis are only 35-45 x 3-4, with 3-4 µm long cells.
Bernard CLESSE, 31-01-2018 11:28
Bernard CLESSE
Re : Karstenia clematidis (?) sur Clematis vitalba
OK Zotto, thank you for the information about K. clematidis !

I do not quite see the difference between K. macer and K. idaei. With the given information and pictures can we eliminate K. macer?

Bernard
Hans-Otto Baral, 31-01-2018 12:07
Hans-Otto Baral
Re : Karstenia clematidis (?) sur Clematis vitalba
I know macer with larger LBs and darker apothecia, but I know the species is variable, and maybe not all in my folder belongs to it. K. macer is also redescribed by Sherwood in the same paper. Spore 7-septate, this appears to distinguish it! Individual cells double length tha n width.
Bernard CLESSE, 31-01-2018 12:10
Bernard CLESSE
Re : Karstenia clematidis (?) sur Clematis vitalba
OK Zotto, thank you, it's perfect !

Bernard
Bernard CLESSE, 31-01-2018 15:57
Bernard CLESSE
Re : Karstenia clematidis (?) sur Clematis vitalba
Here are new pictures of spores, with 9-15 septa. 

Bernard
  • message #52095
Hans-Otto Baral, 31-01-2018 17:15
Hans-Otto Baral
Re : Karstenia clematidis (?) sur Clematis vitalba
yes, this is clear.
Bernard CLESSE, 31-01-2018 17:21
Bernard CLESSE
Re : Karstenia clematidis (?) sur Clematis vitalba
OK Zotto, thank you for your opinion !

Bernard