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Mot de passe perdu? S'inscrire

17-04-2025 15:37

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je suis à la recherche de collections (r

17-04-2025 13:23

Jan Eckstein

Hello,there is an interesting collection of a tiny

16-04-2025 08:53

Josep Torres Josep Torres

Hello.An anamorph photographed under holm oaks thi

15-04-2025 15:06

Francois Guay Francois Guay

I found this small white disco on decaying deciduo

13-04-2025 22:47

éric ROMERO éric ROMERO

Bonjour, Je sollicite votre avis pour cette colle

15-04-2025 21:39

Andreas Gminder Andreas Gminder

Dear all,struggeling as every year with the aquati

10-04-2025 10:09

Mathias Hass Mathias Hass

Hi, Found in March on last years stick from Rubus

09-04-2025 19:37

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon This 1-2 mm Mollisia was growing o

14-04-2025 23:19

Viktorie Halasu Viktorie Halasu

Hello, I've microscoped exsiccate of an Otidea wh

14-04-2025 15:11

Lennert Gees

Greetings!For my master's dissertation I work on c

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Durella?
Jacques Fournier, 01-04-2007 18:30
Jacques FournierBonjour à tous,
j'ai là un disco qui m'intrigue, que je soumets à votre perspicacité.
Je joins la description, en Anglais car j'espère des commentaires de Zotto!
Merci d'avance.
Amitiés,
Jacques
Hans-Otto Baral, 02-04-2007 19:04
Hans-Otto Baral
Re:Durella?
Dear Jacques

this is Pezicula frangulae.

Very good presentation, could be made by myself :-). Glad to see that you use Lugol! With Melzer you would not have obtained the redbrown reaction typical of Pezicula. Wonderful your photos of the ascus apex before and after KOH, also the living guttulate spores! If you saw living asci you will only find such aseptate guttulate hyaline spores inside them, so the yellowish septate spores are overmature.

Cheers
Zotto
Jacques Fournier, 02-04-2007 19:23
Jacques Fournier
Re:Durella?
Dear Zotto,

thanks for your identification. My error is a good example of the possible bad use of terminology. What I assumed to be immature hyaline ascospores were in fact nice living ones, while the yellowish, septate ones were nasty overmature ones. Thanks for the lesson.
Kind regards,

Jacques