Yellow Nectria (aff. pallidula?)

24-08-2019 15:43

Peziza badiofuscoides or P. plebospora?

Mirek Gryc

Hello. Peziza badiofuscoides or P. plebospora? O

24-08-2019 14:43

¿Haematomma?

Josep Torres

Hola.Un líquen sobre una roca caliza del pasado d

22-08-2019 17:34

Endoxyla spec.?

Stefan Blaser

Dear All, This collection from Fagus has globose

23-08-2019 07:46

Cephalotrichum? Doratomyces?

Josep Torres

Hola.Un muy diminuto hongo creciendo sobre unas ho

22-08-2019 21:26

Daldinia

Castillo Joseba

Del pasado lunes en tronca caido de fagusEstaba

21-08-2019 20:42

Wentiomyces sibiricus?

Simon Kennedy

As the historical records are no longer available

22-08-2019 18:35

Unknown Ascomycete on Ulota bruchii

Georges Greiff

Dear all,I have been going through herbarium speci

22-08-2019 16:24

Camarops spec. ?

Stefan Blaser

Dear All, The following collection looks similar

05-01-2019 14:57

Orange on Ulota crispa

Edvin Johannesen

These orange "jelly"-like apothecia grow at the ap

21-08-2019 17:04

Peziza (Pachyella) from the roots of Phragmites?

Mirek Gryc

Hello Grew among the roots of Phragmites.Fruitbod

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.