
10-01-2016 22:31

Bonsoir à tous,Suite et bientôt fin de mes réco

11-01-2016 16:07
Thorben HülsewigHi there,yesterday i found on a unknown dung this

11-01-2016 14:19

Hi friends,I have recently found an unkwon species

10-01-2016 23:48
Thorben HülsewigHi there,today i found on (i think Ceratellopsis,

09-01-2016 19:19

Hola, tengo esta muestra recogida sobre rama de Pi

10-01-2016 17:32

Dear collegues I had problems identifying this sm

10-01-2016 14:04

En compagnie d'un Gibberella sp. cet asco immérgÃ

09-01-2016 22:40

Today we found this discomycete in Stuttgart, on a

Suite et bientôt fin de mes récoltes sur renouée du Japon. Ici je pense à Stictis radiata, d'abord parce que les apothécies sont nettement plus petites (max. 0,3 mm de diamètre) que chez Stictis stellata (diamètre parfois dépassant le mm) montré tout récemment sur Fallopia japonica toujours et que d'autre part, les spores sont ici larges de 2-2,5 mu.
Qu'en pensez-vous ?
Bernard


Thanks for your message !
I will try to make a cut of apothecium but I admit that I do not know what are the periphyses. Would you possibly a drawing or a microscopic picture so that I know what I have to observe? I will try to redo pictures spores alive.
Regarding the iodine reaction, I just noticed a very slight blue color and diffuses into the ascus (especially upper half) with lugol but not a color "deep blue" suitable for this species.
BernardÂ

What is meant with periphysoids (not periphyses, sorry) you can see here.
Sherwoods distinction is perhaps a bit weird, and her opinion about amyloidity may be wrong as she appears not to have understood the influence of KOH and Melzer's.
But I must admit I have no clear concept of thse two species.

A red reaction inside the ascus could be due to glycogen and would then be called dextriniod, but then it should be seen also after KOH, or in Melzer without KOH. What reacts blue after KOH (I think the ascus wall surface) must be red in IKI without KOH (hemiamyloid). See my homepage:
http://invivoveritas.de/articles/iodine-reaction-in-ascomycetes-why-is-lugols-solution-superior-to-melzers-reagent/
Fig. 2 and 5.