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21-03-2026 22:59

Hysteriaceae ??
Petr Soucek

Good evening, I would appreciate some advice on th

21-03-2026 15:13

MYXOMYCETICOLOUS FUNGI
Lepista Zacarias

Hello everyone, Does any one know of any literatu

20-03-2026 12:53

Eutypa spec. (?)
Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Hymenoscyphus ¿calycinoides?
Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Pseudomassaria-like on Cornus alba
Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Xylariaceae? on Carpinus betulus wood
Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

Myriosclerotinia curreyana?
William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

Lasiobelonium corticale ?
François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

"Lasiosphaerioid"
Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Massarina on Corylus
Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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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