Accès membres

Mot de passe perdu? S'inscrire

06-07-2020 17:11

Thomas Læssøe

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

07-07-2020 00:35

Garcia Susana

Hola, He encontrado estos ascomas creciendo inmer

06-07-2020 11:16

Valencia Lopez Francisco Javier

Hola a tod@sHace unos días recolecte este hongo e

06-07-2020 16:40

Michel Delpont Michel Delpont

Bonjour à tous. Sur crottes de chèvres deux exe

06-07-2020 14:11

Thomas Læssøe

Unfortunately without a proper hymenium (overmatur

06-07-2020 12:55

Thomas Læssøe

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

06-07-2020 05:51

Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

05-07-2020 17:52

Juuso Äikäs

I found these growing on dead, fallen canes of Rub

05-07-2020 18:06

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectado

05-07-2020 10:31

Castillo Joseba Castillo Joseba

me mandan el material de Galicia, recolectado en h

« < 1 2 3 4 5 > »
Rosellinia on Salix wood
Enrique Rubio, 01-06-2015 20:33
Enrique RubioHi to everybody and specially to J. Fournier, a very good specialist on this genus.

Our common  friend P. Zapico has found at his home these gregarious, blackish, roundish, papillate and ostiolate, carbonaceous, perithecia 0.9-1.4 mm in diam. growing over on more or less persistent subiculum on very rotten wood of a cut Salix babylonica.


The asci are cylindrical, 8-spored, 155-170 x 8.5-9 microns, pars sporifera 110-138 with a conspicuous apical apparatus Melzer deep blue 5-6 x 4 micr.


The ascospores are ellipsoid, equilateral, brownish at maturity, with straight germ slit nearly as long as spore, situated on the more convex side, and 1(-2) semiglobose cellular appendage (-s) surrounded by a partial, narrow slimy sheath. (14.7-)16.3(-18.2) x (6.5-)7.0(-8.0); Q = 2.1-2.5


I feel this fungus could be near to Rosellinia akulovii L.E. Petrini but I'd like to know your opinion.


Many thanks in advance for your help

  • message #36250
  • message #36250
  • message #36250
  • message #36250
  • message #36250
  • message #36250
Jacques Fournier, 01-06-2015 21:19
Jacques Fournier
Re : Rosellinia on Salix wood
Hola Enrique,
it's good  to hear from you and Pedro!
The overall morphology and the ascospores with cellular appendages and germ slit on the convex side clearly set this Rosellinia in the aquila-corticium group. Based on ascospores and apical apparatus dimensions and sheath morphology I would call it R. aquila, even though the ascospores are a bit small. I have seen a wide range of variations in this species, from small-spored collections like yours to large-spored ones grading into R. corticium. They might represent different species but they are difficult to separate based on morphology only.
I do not know R. akulovii for comparison.
Sorry Enrique, I guess you are not going to like my answer!
Cheers,
Jacques
Enrique Rubio, 01-06-2015 21:31
Enrique Rubio
Re : Rosellinia on Salix wood

Hi Jacques


No. I like very much your expert opinion on this very difficult genus, at least for me.


Many thanks, Jacques!