28-08-2012 11:49
Bernard Declercq
Bonjour,Qui pourrait me fournir une bonne descript
04-09-2012 22:39
Camporesi ErioHi to all, did someone already collect an in
04-09-2012 22:25
Esquivel-Rios EduardoThanks for the data. Im sending a specimen to Dra.
04-09-2012 14:29
Enrique Rubio
Can this fungus be Diatrype undulata? I have colle
03-09-2012 17:09
Enrique Rubio
Cher amis du Forum:Cette Nemania a des estromes j
04-09-2012 03:34
Esquivel-Rios EduardoThis Amplistroma sp. dont match with any sp. known
03-09-2012 04:20
Esquivel-Rios EduardoHi.Did someone knows about Phylacia genera (Xylari
02-09-2012 23:06
Camporesi ErioHi to all, did someone already collect a
02-09-2012 17:18
Enrique Rubio
Hi to everybodyI'd like to know your opinion about
Discomycete on Quercus rubra branches
Alex Akulov,
14-08-2012 19:19
Dear FriendsCan you help me with identification of discomycete sample from Q. rubra branches?
When I collect it, I was sure that it is Pezicula sp., but I meet smaller and distinctly verrucose spores.
Grateful before,
Alex
Hans-Otto Baral,
14-08-2012 19:38
Re : Discomycete on Quercus rubra branches
Hi Alex
did you test with Lugol? I suppose it is a Pezicula which should show a deep red apical ring. Don't use Melzer 'cause that would resulat in no reaction at all.
Zotto
did you test with Lugol? I suppose it is a Pezicula which should show a deep red apical ring. Don't use Melzer 'cause that would resulat in no reaction at all.
Zotto
Alex Akulov,
14-08-2012 20:21
Re : Discomycete on Quercus rubra branches
Thank you, Zotto,
But I dont seen red apical ring in Lugol.
Alex.
But I dont seen red apical ring in Lugol.
Alex.
Alex Akulov,
14-08-2012 20:38
Re : Discomycete on Quercus rubra branches
Sligthly roseous tips can be considered in several asci, but it is not deep red.
Alex
Alex
Hans-Otto Baral,
14-08-2012 20:47
Re : Discomycete on Quercus rubra branches
Maybe you need to apply more of your solution. You are sure it does not contain chloralhydrate?
Zotto
Zotto
Alex Akulov,
14-08-2012 20:53
Re : Discomycete on Quercus rubra branches
Can it be immature Pezicula cinnamomea?
I used pure Lugol.
Alex
I used pure Lugol.
Alex
Hans-Otto Baral,
14-08-2012 20:58
Re : Discomycete on Quercus rubra branches
Yes, I suppose, but I would rather say dead instead of immature. The asci have their deep red apical ring already very early during development, when the spores are still not present.
Your Lugol should look honey-brown in the bottle, if yellow you need to add a few iodine crystals. But the pure red reaction in Pezicula (type rr) is shown with yellow Lugol also.
Your Lugol should look honey-brown in the bottle, if yellow you need to add a few iodine crystals. But the pure red reaction in Pezicula (type rr) is shown with yellow Lugol also.
Alex Akulov,
14-08-2012 20:58
Re : Discomycete on Quercus rubra branches
I try to prepare fresh Lugol solution tomorrow and to make photo again.
Alex
Alex
Alex Akulov,
14-08-2012 21:02
Re : Discomycete on Quercus rubra branches
Thank you for advise!
Really, I was able to see the redish color only in the very immature asci, where spores has only begun to take shape.
Alex
Really, I was able to see the redish color only in the very immature asci, where spores has only begun to take shape.
Alex