Accès membres

Mot de passe perdu? S'inscrire

24-05-2019 15:32

Andrés Valverde Valera Andrés Valverde Valera

Bonjour, Je vous envoie des photos de cet ascomyc

28-04-2019 20:18

Pintos Angel Pintos Angel

Hello, does anyone know if the cyberliber website

23-05-2019 19:56

Ron Bronckers

Hi everybody,I am looking for a copy of the follow

23-05-2019 11:56

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together in march we found this Mollisia .

18-05-2019 21:17

Django Grootmyers

Hello, I have been having trouble identifying this

22-05-2019 18:10

Thomas Læssøe

I have encountered scanty materiale of a tiny (!)

21-05-2019 18:13

Blasco Rafael Blasco Rafael

Hola, alguna idea de que genero mirar, me recuerda

20-05-2019 22:07

Ethan Crenson

In New York City on what I believe are raccoon dro

22-05-2019 16:05

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together on saturday we found also this Mol

22-05-2019 19:05

Roger Melo Roger Melo

It looks like a composite apothecia on wood of an

« < 1 2 3 4 5 > »
pyrenomycete
greet van autgaerden, 26-03-2017 09:44
Hi everybody,
Can anyone help me with this:

On the inside of the bark of Salix .
Perithecia soft black sphaerical with short necks. 0,15 mm wide, superficial, closely packed in groups of 5-6, several of these groups 3-4 cm apart. Ascospores hyaline, 50-60*2 µm, with high oil content, becoming at least 5-septate , maybe more. Asci 75*9 µm, IKL negative. Paraphyses: 100*7-8 µm, septate. No anamorf to be found.

Thank you,
Greet  

  • message #48173
  • message #48173
  • message #48173
  • message #48173
  • message #48173
Eduard Osieck, 26-03-2017 12:18
Re : pyrenomycete
Hi Greet,

Interesting collection. Are the perithecia stromatic? If so, you could consider the genus Sillia, e.g. S. ferruginea, which is described in Munk 1957 (another reference, see tab "Artikelen" at https://www.verspreidingsatlas.nl/1147010#). A generic description is given in sleutel (key) A9: see
http://www.mycologen.nl/Ascosleutel/downloads/SleutelA13_v3-1.pdf

Eduard
Jacques Fournier, 26-03-2017 16:10
Jacques Fournier
Re : pyrenomycete
Hi Greet,
I suggest you consider the genus Ophioceras, primarily known from aquatic habitats but including some terrestrial species. The apical apparatus of asci is indeed J- but stains with blue ink or Congo red.
A good, if not comprehensive account was given by Shearer et al., Mycologia 91: 145-156. Should be available on Cyberliber.
good luck,
Jacques
greet van autgaerden, 26-03-2017 20:52
Re : pyrenomycete
Hi Eduard and Jacques, 
Thanks for your advice and help,

@Eduard: I started out in the first place with the key you suggested (great key) and couldn't find a match.There is no stroma, only a dark patch surrounding the peritecia, this being wood stained black.

 @Jacques: I made a new picture where I stained the asci with Congo-red. The coloring isn't much but I think it could be considered as a positive reaction. I read the article you suggested but couldn't find a species that matches my measurements. So it'll stay a Ophioceras sp.

Thanks,
Greet
  • message #48182