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26-04-2026 21:08

Ramularia sp ?
William Slosse William Slosse

Several species of Ramularia occur on Rumex that I

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

lachnum pudicellum
Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

24-04-2026 03:16

Trinacrium robustum?
David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 01:06

Neonectria ou thelonectria ?
Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Pseudaegerita spec.
Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

Fungus sp
François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Peziza
Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 19:12

Poilu, violet avec KOH
Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Hymenoscyphus sp
Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

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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