Accès membres

Mot de passe perdu? S'inscrire

24-01-2015 10:09

Nina Filippova

Dear forum,i am currenly working with collection o

25-01-2015 16:59

Blasco Rafael Blasco Rafael

Hola tengo esta muestra recogida en madera de Popu

25-01-2015 12:02

Leandro Sánchez Leandro Sánchez

Sur terrain sablonneux, dunes établies, près de

23-01-2015 08:26

brigitte vignot

bonjour trouvé sur écorce de feuillus (probable

22-01-2015 20:46

Miguel Ãngel Ribes Miguel Ángel Ribes

Hello, good nightI have this small (1-2 mm broad)

25-01-2015 09:45

Vasileios Kaounas Vasileios Kaounas

I want to ask a question. Can we only from a featu

25-01-2015 09:31

Nina Filippova

I was following Barr (1970) for identification of

24-01-2015 14:31

Nina Filippova

Good day to everyone,there is some uncertainty wit

23-01-2015 20:56

Godorova Olga Godorova Olga

Hello. I thought, I've found some tiny Cheilymenia

23-01-2015 18:08

Godorova Olga Godorova Olga

Hello. I've found these on rotten stems of grass i

« < 967 968 969 970 971 > »
Perithecia with asci in clusters
Nina Filippova, 24-01-2015 10:09
Dear forum,

i am currenly working with collection of Perithecia-forming species inhabiting Andromeda leaf litter. My orientation in the systematic space of this group is still poor. Could you possibly give me a clue on approximate position of this representative?, it seems beautiful and distinctive one.

On fallen leaves of A. polifolia, C. calyculata, L. palustre in raised bog community.

Ascomata scattered on both sides of the leaf, sphaerical, superficial, setose around the pore, and with descending hyphae in lower part, up to 150 mk in diameter.

Setae brown, septate, thick-walled, straight and short near the pore, bent and longer outward, 40-80 mk long, 8 mk broad at base, narrowing to obtuse tip; descending hyphae brown, septate, about 1 mk broad; asci clavate, attached to stalks which connected together in bunches, 20–23 x 8–9.6 mk, dehiscence mode unclear; hamathecium from elongated thin elements surrounded by gelatinous substance; spores hyaline, two-celled, with deep constriction, with many small to medium oil guttules, measured in vital state 10 (9–1.8) x 3.5 (3.3–3.9) mk (n=22).
  • message #33340
  • message #33340
  • message #33340
  • message #33340
  • message #33340
  • message #33340
Nina Filippova, 25-01-2015 18:24
Re : Perithecia with asci in clusters
Hello,

i am still searching any information about this taxon. It is puzzling ). It may belong to Mycosphaerellaceae because absence of paraphyses, two-celled hyaline spores and fasciculate asci. But i could not decide any precisely about genus and species.

Nina.
Dartanha Soares, 26-01-2015 14:21
Dartanha Soares
Re : Perithecia with asci in clusters
Hi Nina,

Check von Arx and Müller (1975) Studies in Mycology n°9 (available here: http://www.cbs.knaw.nl/index.php/studies-in-mycology/378-studies-in-mycology-no-9).


Did you noticed the presence of superficial hyphae too? Could be a Wentiomyces or Epipolaeum species, but the habitat is uncommon and both are more frequently found on live leaves. Aditionally, Epipolaeum has coloured ascospores, and your specimen appears to be hyaline, at least initially.


Good luck.