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08-11-2025 00:29

Allophylaria subliciformis?
Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Leptosphaeria?
Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Mollisia sur Pinus
Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

08-11-2025 12:10

Phacidium
Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

06-11-2025 16:50

Hymenoscyphus sp?
Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Cladosporium ?
Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Hymenoscyphus on blueberry.
Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Protounguicularia transiens?
Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Tatraea sp. ? on Populus tremula
Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

Ascomycetes
David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

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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