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04-09-2012 14:29

Enrique Rubio Enrique Rubio

Can this fungus be Diatrype undulata? I have colle

03-09-2012 17:09

Enrique Rubio Enrique Rubio

Cher amis du Forum:Cette Nemania a des estromes j

04-09-2012 03:34

Esquivel-Rios Eduardo

This Amplistroma sp. dont match with any sp. known

03-09-2012 04:20

Esquivel-Rios Eduardo

Hi.Did someone knows about Phylacia genera (Xylari

02-09-2012 23:06

Camporesi Erio

 Hi to all,     did someone already collect a

02-09-2012 17:18

Enrique Rubio Enrique Rubio

Hi to everybodyI'd like to know your opinion about

29-08-2012 18:47

Enrique Rubio Enrique Rubio

Hi to allThese small and narrowly sessile ascomata

31-07-2012 17:17

Alex Akulov Alex Akulov

Dear FriendsCan you help me with the identificatio

20-08-2012 21:31

Bernard Declercq Bernard Declercq

Hi,A friend of mine sent me a collection on decort

27-08-2012 11:48

Alessio Pierotti Alessio Pierotti

According Mycobank some Polystigma, such as P. tru

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Diatrype on Betula
Enrique Rubio, 04-09-2012 14:29
Enrique RubioCan this fungus be Diatrype undulata? I have collected it on Betula alba branches at 1600 m and I think could be this species but the macro/micro-differences with another Diatrype species as D. decorticata are very small. Off course, I don't know the conidia. Ostioles are conical, split and slightly protruding. Perithecia up to 500 microns long. I see any blue reaction of the apical pore in Mlz., IKI or KOH pret. (Rappaz says that the asci are I (+)!!)
What do you think?
Many thanks again
  • message #19622
  • message #19622
  • message #19622
Alain GARDIENNET, 04-09-2012 18:19
Alain GARDIENNET
Re : Diatrype on Betula
Dear Enrique,
We had a discussion on this forum, a apart of your answers are inside : http://www.ascofrance.fr/search_forum/16922
My personal opinion is that your fungus is very probably D. undulata. I recognize ondulate (ethymology of undulata) stromate that I regularly observe on Betula. But you are right,  teleomorphs are very close.
Very good photos, as usual !
Alain
Enrique Rubio, 04-09-2012 18:56
Enrique Rubio
Re : Diatrype on Betula
Cher Alain
J'avais lu la discussion que tu me dites mais les differences entre D. decorticata et undulata restent encore peu claires, au moin san practiquer les cultures.

Connais tu si quand Rappaz appele I(+) il pense a la refringence de l'aparail apicale ou il pense á son amyloidisme?
Merci beaucoup
Enrique