Accès membres

Mot de passe perdu? S'inscrire

09-01-2015 12:57

Alan Rockefeller Alan Rockefeller

I found this in a semitropical area of Queretaro,

11-12-2019 22:21

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Pourriez-vous me confirm

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

05-01-2019 14:57

Edvin Johannesen Edvin Johannesen

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

11-12-2019 16:42

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Même s'il ne s'agit pas

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

09-12-2019 12:05

PASCAL DUBOC

Bonjour cette colonie de pustules orange sur vieu

09-12-2019 21:35

William Slosse William Slosse

Yesterday I found this species on the underside of

18-11-2014 11:05

Stip Helleman Stip Helleman

Dear friends,is there anyone who has for me the ar

« < 1 2 3 4 5 > »
Ceratosphaeria?
Enrique Rubio, 31-03-2016 21:07
Enrique Rubio

Hi forum


These scattered, more or less inmersed, black, ostiolate, glabrous, lageniform perithecia, 0.3-0.5 mm long, with elongated cylindrical necks 100-200 microns long, were growing on indeterminate semirotten wood together with pseudothecia of Capronia cf. pilosella.


The asci are shortly stipitate, with a conspicuous refractive, IKI negative, apical apparatus, 170-194 x 10-12 microns, with 8 obliquely 1-seriate, hyaline, 4-celled ascospores. Paraphyses often collapsing.


I think this fungus should be near the genus Ceratosphaeria but any species seems to fit well with my collection.


Have yo some idea for me?


Thanks again

  • message #41906
  • message #41906
  • message #41906
Enrique Rubio, 31-03-2016 21:21
Enrique Rubio
Re : Ceratosphaeria?
Could Chaetosphaeria (Zignoella) ovoidea be a good possibility for it?
Peter Wilberforce, 01-04-2016 12:14
Re : Ceratosphaeria?
Hello Enrique,,
Your collection seems to be referrable to  Ceratosphaeria, characterised by the elongated beak, spores having several cross walls, often more than three..By definition the genus Zignoella  has at most a papillate ostiole, and spore cross walls at most three.
Suggested taxa for your collection are Ceratosphaeria crinigena or possibly C. rhenana 
Kind regards,
Peter
Jacques Fournier, 01-04-2016 14:21
Jacques Fournier
Re : Ceratosphaeria?
Hola Enrique,
since the great work done by Martina Réblova it became unfortunately challenging to assign one of these beaked fungi to a genus without the asexual morph and molecular data.
There is a good overview of these fungi with a key to genera in Réblova 2013, Mycologia 105: 462-475. Your fungus might have affinities with Ceratolenta caudata but has significantly larger ascospores.
Enrique, you should make an effort to find fungi that exist!

Saludos,

Jacques
Enrique Rubio, 01-04-2016 16:08
Enrique Rubio
Re : Ceratosphaeria?
OK. Many thanks Peter and Jacques. Certainly I'm not lucky with the fungi that exist!
Hans-Otto Baral, 01-04-2016 20:36
Hans-Otto Baral
Re : Ceratosphaeria?
I am not really certain but this looks to me like images I have under Annulusmagnus triseptatus. For instance, a collection by Enrique on Rubus from Sept. 2015.  The apical ring is a bit thinner, but otherwise?

Zotto
Enrique Rubio, 01-04-2016 20:52
Enrique Rubio
Re : Ceratosphaeria?

You are right, Zotto! Your memory is surprising...http://www.ascofrance.fr/search_forum/38103 But for this collection on Rubus, also out and far of the water, i could not to observe the inmersed ascomata. But I think Annulusmagnus has greater ascospores and a more conspicuous, very congophilous, apical apparatus.


Who knows!