Accès membres

Mot de passe perdu? S'inscrire

03-07-2020 17:47

Thomas Læssøe

see: https://svampe.databasen.org/observations/10

27-06-2020 13:21

Hardware Tony Hardware Tony

I wondered if anyone could help me with this ascom

04-07-2020 14:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, I would like to ask you for help with idet

03-07-2020 21:06

Castillo Joseba Castillo Joseba

me mandan el material seco,, recolectado en plante

03-07-2020 20:54

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en rama de

03-07-2020 22:51

Viktorie Halasu Viktorie Halasu

Hello,I'd like to ask for help with a lichen. In w

02-07-2020 21:45

Castillo Joseba Castillo Joseba

me mandan el material seco, recolectado en  tallo

02-07-2020 07:56

Garcia Susana

Hola, Agradecería vuestra ayuda para la identifi

02-07-2020 13:33

Garcia Susana

Hola, He recogido estos apotecios que crecían en

02-07-2020 16:05

Thomas Læssøe

see: https://svampe.databasen.org/observations/10

« < 1 2 3 4 5 > »
Another Pezoloma species
Enrique Rubio, 31-07-2012 23:33
Enrique RubioAscomata turbinate, not scutellate, that grew on peaty soil with small roots and liverworts, fully whitish, up to 3 mm, strongly gelified, margin not ciliate.
Spores 2-guttulate that seems verruculose but is not confirmed by the use of cotton blue.
Asci 8-spored, IKI negative (KOH pret. negative too), croziers +, up to 100 x 13.
Paraphyses polimorphic, without Vb's, embebed in a hyaline gelified matrix.
No crystals, no blue reaction in Melzer.  

Margin of a firmly textura porrecta. Ectal excipulum of the flanks with a fine outer layer of cilyndrical gelified hyphae. All the layers are gelified too.


I think could be a Pezoloma species but I don't know what could be
Many thanks again
  • message #19373
  • message #19373
  • message #19373
  • message #19373
  • message #19373
  • message #19373
  • message #19373
  • message #19373
Hans-Otto Baral, 03-08-2012 10:27
Hans-Otto Baral
Re : Another Pezoloma species
Dear Enrique

I had an energy supply problem here and therefore no computer access for two days.

Again a problem more! Obviously a Pezoloma, but no idea if I ever sa this.

Is the medulla similar as in the previous species, i.e. without apparent gel?

Zotto
Guy Garcia, 03-08-2012 18:15
Re : Another Pezoloma species
Perhaps near Pezoloma obstricta ?
Hans-Otto Baral, 03-08-2012 18:23
Hans-Otto Baral
Re : Another Pezoloma species
Sweems a good idea! Guy,  do you know a redescription of the briefly described Karsten taxon?

Zotto
Guy Garcia, 03-08-2012 23:30
Re : Another Pezoloma species

I only know the description in
DENNIS R.W.G. & HASSELL F.C. 1955        Some interesting Irsih fungi.   Irish Natur. Journ.  11  ( 12 ) : 334-336.
Do you want a pdf ? 
Guy

Hans-Otto Baral, 04-08-2012 10:11
Hans-Otto Baral
Re : Another Pezoloma species
1955 must have been a good year for Dennis, I have 7 papers of him dating that year. But never heard of the one you mention.

Zotto
Enrique Rubio, 04-08-2012 11:27
Enrique Rubio
Re : Another Pezoloma species
Dear Zotto and Guy

My collection have  a gelified medullary layer. In fact all the layers are gelified but specially the outer ectal excipulum.
Please can you send me Dennis's paper about P. obstricta?
Many thanks again
Enrique
Guy Garcia, 04-08-2012 12:10
Re : Another Pezoloma species
Hi Zotto and Henrique,

Yes, 1955 has been a prolific year for Dennis !
Zotto have you a listing of its seven papers of 1955 ? I think they are all of the Kew Bulletin volume 10.

Perhaps you don't know 
DENNIS R.W.G.  1955        Ascomycetes from Tristan da Cunha. Res. Norw. Sci. Exp. Tristan da Cunha 1937-38.    36 :   1-10.

Henrique, this evening, I shall send a pdf of the paper about Pezoloma obstricta. This publication is mentioned in
DENNIS R.W.G. & KORF R. P.       1958        A japanese species of Sphagnicola Velenovsky.                Kew Bull.               13  ( 1 ) :  181-183.

Best, Guy 
Enrique Rubio, 04-08-2012 12:30
Enrique Rubio
Re : Another Pezoloma species
Many thanks, Guy
Michel Hairaud, 04-08-2012 12:36
Michel Hairaud
Re : Another Pezoloma species
Bonjour Guy,et tous, 
Pourras tu me mettre en copie des docs adressés à Zotto et Enrique ? 

 Est ce que la limite entre Pezoloma et Ombrophila est toujours claire, notamment avec, comme ici l'absence de vacuole réfringente homogène dans les paraphyses ? 
Les autres caractères semblent proches ...

Amitiés
Michel
Hans-Otto Baral, 04-08-2012 15:34
Hans-Otto Baral
Re : Another Pezoloma species
Apart from VBs: Pezoloma is always without crystals (Ombrophila often with) and usually has a strong gel in the medulla (Pezoloma ?never). But Enrique, do you have a photo of the medulla of your cf. obstricta?

I actually miss an option of output in my database for references. Yes, most are of Kew Bulletin 10, but one is that for Tristan da Cunha.

Zotto
Enrique Rubio, 04-08-2012 19:59
Enrique Rubio
Re : Another Pezoloma species
Here are microphotos of the medullary excipulum. Gel is not well visible but we can estimate that this tissue is sligthly gelified when we are cutting the apothecia.

Dennis's description of Ombrophila obstricta (A Revision of the British Helotiaceae...) is confuse. He says pore slightly flushed with blue on the outer surface in Melzer's reagent. And he drew ascospores as conspicually fusiform with acute ends whereas the ascospores of my collection have obtuse ends.
  • message #19393
Guy Garcia, 04-08-2012 20:55
Re : Another Pezoloma species
Voilà le document promis.
Bonne lecture
Amitiés, Guy
Hans-Otto Baral, 04-08-2012 22:25
Hans-Otto Baral
Re : Another Pezoloma species
Spores are also too narrow and especially heteropolar (almost clavate), hardly congruent with your collection. The photo cannot be enlarged, could ypou please try again? It shows brick-shaped cells, I cannot see any gel between.

And thanks to Guy for the scan.

Zotto
Enrique Rubio, 05-08-2012 20:42
Enrique Rubio
Re : Another Pezoloma species
Dennis's drawings show clavate ascospores but in the description of Ombrophila obstricta (A revision of British Helotiaceae...) the ascospores are long fusiform!


Many thanks Guy, Zotto and Michel
  • message #19402
Guy Garcia, 05-08-2012 22:15
Re : Another Pezoloma species
C'est nous qui te remercions pour tes superbes récoltes !
Guy
Hans-Otto Baral, 05-08-2012 22:25
Hans-Otto Baral
Re : Another Pezoloma species
Yes, and also Karsten writes fusoid-oblong. How is it possible that Karsten says 12-23 x 4-6 and Dennis 1955 only "11-11 x 3-4"? But Dennis 1956 gives Karsten's spore size, though he mentioned that Karsten later gave only 7-12 x 3-5 µm. Finally, how is Dennis' Fig. 145 to understand? It is made of the type, as far as I see. The drawn fusoid spores are around 12-13 x 2.8-3.2 µm.

To avoid misunderstandings: the attached photo is part of the medulla? But you said the medulla is gelatinized? This looks like a thin-walled t. prismatica without gel.


Zotto?