Accès membres

Mot de passe perdu? S'inscrire

14-04-2015 20:34

Steve Clements

Hi,This is one which i thought would be relatively

12-04-2015 22:32

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Voici un autre asco poussant sur b

13-04-2015 20:05

Enrique Rubio Enrique Rubio

Hi to everybody I know Hypcopra is a very difficu

14-04-2015 07:58

Blasco Rafael Blasco Rafael

Hola , tengo esta pequeña muestra recogida sobre

14-04-2015 18:47

Enrique Rubio Enrique Rubio

Hi again I think this fungus found on old Juncus

14-04-2015 13:46

Blasco Rafael Blasco Rafael

Hola, esta muestra creo que puede ser una Trichope

14-04-2015 14:45

Castillo Joseba Castillo Joseba

Me mandan desde Galicia ... me dice que crecen en

14-04-2015 13:09

Castillo Joseba Castillo Joseba

Viene desde Galicia,  me dice que la encontrço e

13-04-2015 13:15

Gernot Friebes

Hi,unfortunately my Latin skills are rather poor s

13-04-2015 21:46

Castillo Joseba Castillo Joseba

En madera de retama (Fabacea),  una especie de pl

« < 1036 1037 1038 1039 1040 > »
Mollisia?
Steve Clements, 14-04-2015 20:34
Hi,
This is one which i thought would be relatively easy as it has quite distinctive hair-like structures with dense contents cut off with a septum. However, I could find nothing like them in my books (Ellis and Ellis, FOS vol 1, Peter Thompson).
Found on very rotten wood by a stream in mixed woodland (mainly Oak , Sycamore and Hazel in vicinity, but logs washed down hillside). Apothecia very dark grey (blackish) up to 2 mm, sessile. The edge looks rather thick and rough. On drying the disc turned much paler.
Spores 6-10 x 2-2.5, no guttules. Asci blueing with Lugol: typically 80-90 x 4. Excipular cells rounded, about 10 um across.
The most interesting structures were the paraphyses/hairs up to 80 x 5 (swollen tip) which contained a glassy substance, sharply cut off by a septum. Some had a nipple. However, there were also thread-like paraphyses(?) present up to 2.5 wide.
Any help at all with this - my third query from our 34th survey of the Longshaw Estate in the Peak District - would be very welcome.
Regards,
Steve
  • message #35241
  • message #35241
  • message #35241
Hans-Otto Baral, 14-04-2015 21:26
Hans-Otto Baral
Re : Mollisia?
This glassy content is a refractive vacuole (vacuolar body, VB) which occurs in every Mollisia (see images in this forum). But you see it only in the living state, therefore you saw also narrower paraphyses without.

The asci are rather long, otherwise I would say Mollisia cinerea.
You can test the KOH-reaction of these VBs. Add a small drop of 1-10% KOH to the edge of the coverslip and look whether a yellow sap extrudes in the medium (visible only for some seconds, best at 100x or 400x).
Zotto
Steve Clements, 14-04-2015 22:11
Re : Mollisia?
Many thanks Zotto - I am learning a great deal from Asco France!
Steve