01-03-2026 18:46
Robin Isaksson
Hi!This species i se from time to time in the earl
01-03-2026 08:55
Michel Hairaud
Bonjour , Je souhaiterais recevoir cet article :Â
01-03-2026 15:31
Csaba Németh
Hello!I found these apothecia on Homalothecium lue
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
01-03-2026 17:51
Bruno Coué
Bonjour,sur vieilles crottes de sanglier en chambr
27-02-2026 17:51
Michel Hairaud
Bonjour, Quelqu'un peut il me donner un conseil p
01-03-2026 14:10
Antonio Couceiro
Hola, me gustaria conocer opiniones sobre este tem
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
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.Â
Alex
Really, I was able to see the redish color only in the very immature asci, where spores has only begun to take shape.Â
Alex