
18-02-2019 19:45
Patrice TANCHAUDBonjour récolte sur épicéa, spores 62-83 x 3-3

20-02-2019 08:22
Patrice TANCHAUDSur épicéa. Spores 7,5-10 x 2,5-3 µm. Merci d'

19-02-2019 22:35

Sur bourgeon pourri de peuplier du Canada, caché

19-02-2019 19:49

Hola, alguna idea de a que genero debo mirar ???,

05-12-2016 14:44
I am trying to find out why one of the British fun

19-02-2019 14:41

Hi, Following collection was made on fallen twig
Yellow Nectria (aff. pallidula?)
Edvin Johannesen,
18-01-2019 22:14

Dear all,
This nectriaceous species was growing erumpent on twigs of old, but living plum tree (Prunus). Ascospores measure ca. 13 x 4-6 microns, and become warted and 1-septate at maturity. Is this sufficient for identification or does it need further studies?
Christian Lechat,
19-01-2019 06:20

Re : Yellow Nectria (aff. pallidula?)
Hi Edvin,
maybe your fungus is Bionectria. Vertical section through ascomatal wall could be very useful as well as the reaction in KOH and lactic acid. Please, check if there is an asexual state on the substrate or around the stromata, which should be clonostachys-like.
All the best,
Christian
Edvin Johannesen,
19-01-2019 11:36

Re : Yellow Nectria (aff. pallidula?)
Thanks, Christian. Do you mean cotton blue or plain lactic acid (which I do not have)? What to look for? Do you have a good article on Bionectria? I have limited access to literature on the internet.
Best regards,
Edvin
Edvin Johannesen,
19-01-2019 13:47
Edvin Johannesen,
19-01-2019 13:49
Christian Lechat,
19-01-2019 15:35

Re : Yellow Nectria (aff. pallidula?)
you should take a look at Schroers 2001 A Mponograph of Bionectria Studies in Mycology 46.
Regards,
Christian
Edvin Johannesen,
19-01-2019 15:38

Re : Yellow Nectria (aff. pallidula?)
Thanks, again. I will see if I have access. I am thinking now maybe B. ochroleuca, but need to check further.
Regards,
Edvin