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27-11-2025 12:01

Valsa/Cytospora on Cryptomeria bark - Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

another loculo on Aesculus with muriform spores - Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10493918

17-09-2025 10:50

Ascomycete on Polystichum proliferum

Heather Merrylees

Hi there!I am hoping for any advice on the identif

29-11-2025 08:40

Small hyalin discomycete on Fagus

Andreas Millinger

Andreas Millinger

Hello,on a splintered part of a branch on the grou

28-11-2025 16:45

Ascocoryne lilacina?

Nogueira Héctor

November 23, 2025 Requejo de Sanabria (León) SPAI

25-11-2025 14:24

Anybody recognize this strange anamorphic fungus on Sambucus nigra, Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10490522

27-11-2025 15:41

Hysteriales (Mytilinidion mytilinellum??) on Larix cone, with too? big spores - Denmark

Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

27-11-2025 11:31

Loculo on Aesculus - Denmark

Thomas Læssøe

Collectors notes: Immersed ascomata, erumpent thro

23-09-2025 13:31

"Bertia-like" Sordariales on Typha - Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

26-11-2025 18:13

All Mycotaxon issue available in BHL

Jason Karakehian

Jason Karakehian

The entire run of Mycotaxon is now available throu

Karstenia clematidis (?) sur Clematis vitalba

Bernard CLESSE, 30-01-2018 18:04

Bernard CLESSE

Bonsoir 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

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

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