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25-04-2019 21:19

Enrique Rubio Enrique Rubio

Minute orange apothecia firmly anchored to the lic

25-04-2019 23:23

Joop van der Lee

Found on horse dung.Perithecia: 288x246 um; covere

24-04-2019 20:14

Salvador Tello

Hola.Me gustaría saber si tienen algún nombre pa

20-04-2019 01:02

Valencia Lopez Francisco Javier

Hola a todos/asAdjunto fotos de unas supuestas Tri

25-04-2019 06:59

Django Grootmyers

I have been attempting to identify some Lachnum-li

25-04-2019 11:17

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  recolectado

25-04-2019 16:16

Edmond POINTE Edmond POINTE

Bonjour à tous,Culture en serre à J+42. crotte d

25-04-2019 16:16

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je recherche un PDF de l'article suivant :

24-04-2019 20:25

Lothar Krieglsteiner Lothar Krieglsteiner

... collected 05.04.2019 in the Algarve, nw. of Lo

24-04-2019 22:22

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  recogido en

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Yellow Nectria (aff. pallidula?)
Edvin Johannesen, 18-01-2019 22:14
Edvin Johannesen
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?
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Christian Lechat, 19-01-2019 06:20
Christian Lechat
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
Edvin Johannesen
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
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.
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Edvin Johannesen, 19-01-2019 13:49
Edvin Johannesen
Re : Yellow Nectria (aff. pallidula?)
Apart from a few structures associated with the ascomata, an anamorph is not evident. Do these images show clonostachys or is this something else?
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Christian Lechat, 19-01-2019 15:35
Christian Lechat
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
Edvin Johannesen
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