Yellow Nectria (aff. pallidula?)

18-02-2019 19:45

Stictis friabilis ?

Patrice TANCHAUD

Bonjour récolte sur épicéa, spores 62-83 x 3-3

20-02-2019 08:22

Hyaloscypha aureliella / britannica

Patrice TANCHAUD

Sur épicéa. Spores 7,5-10 x 2,5-3 µm. Merci d'

19-02-2019 22:35

Crocicreas (?) sur bourgeon de peuplier du Canada (poplar bud)

BERNARD CLESSE

Sur bourgeon pourri de peuplier du Canada, caché

19-02-2019 23:07

Pyreno on Sorbus

Per Marstad

I have found this on Sorbus aucuparia, in Norway.I

19-02-2019 13:43

Orbilila rouge

Patrice TANCHAUD

Sur Abies. Spores 7-9 x 0,8-1,2 µm. Peut-être ve

19-02-2019 19:49

Coniochaeta posible

Blasco Rafael

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

19-02-2019 19:46

Segmented spores.

Per Marstad

I have found this on Fagus, in Norway.Size : 2 - 3

19-02-2019 17:06

phacidium?

Laurens van der Linde

hello i found this specie on a Berberis vulgaris

05-12-2016 14:44

Scutellinia cejpii

Malcolm Greaves

I am trying to find out why one of the British fun

19-02-2019 14:41

Conidiomata on twig of Salix alba

Bernard Declercq

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

Re : Yellow Nectria (aff. pallidula?)

The ascomatal wall appears two-layered; an outer yellow and an inner hyaline layer. I have also tested iodine reactions. Neither Barals (alone) or Lugol after pre-treatment with 3% KOH gave any detectable staining.