10-04-2026 23:22
Gernot FriebesHi,ascospores are 1- to 3-septate, approximately
10-04-2026 15:51
William Slosse
Hello everyone, On 08/04/26, I found a growth sit
09-04-2026 15:25
Jac GelderblomOn bare soil between mosses Ifound an asco I deter
09-04-2026 13:55
Thomas Læssøehttps://svampe.databasen.org/observations/10589176
09-04-2026 10:12
Thomas Læssøehttps://svampe.databasen.org/observations/10587061
08-04-2026 20:33
Found 07-04-26, in Abies cephalonica. Diameter 1,
08-04-2026 10:39
FRANCIS FOUCHIERBonjour , je recherche en pdf cet article: KORF R
Karstenia ? on Blechnum
Chris Yeates,
05-09-2020 14:38

I have made a surprise collection on the rachis of a Blechnum spicant frond Superficially like a Karstenia, but I appreciate that this is not an easy area.
Given that I have only scant material I would appreciate some guidance on microscopical examination. Presumably water first and then which reagents?
Thanks, Chris
Erwin Gruber,
05-09-2020 14:47
Re : Karstenia ? on Blechnum
Chris, as your photos reveal, the tiny ascomata - or conidiomata? grew on the leaf stalk of (Blechnum) now again preferred Struthiopteris spicant. Rachis is the right term for the leaf midrib, proceeding the stipe in the blade.
I may not provide guidance for examination so far, sorry!
Best regards
Erwin
p.s. Did you ever find or sample this parasitic fungus? http://www.ascofrance.fr/forum/64784/reports-of-parasitic-cryptomycina-pteridis
I may not provide guidance for examination so far, sorry!
Best regards
Erwin
p.s. Did you ever find or sample this parasitic fungus? http://www.ascofrance.fr/forum/64784/reports-of-parasitic-cryptomycina-pteridis
Hans-Otto Baral,
05-09-2020 16:17
Re : Karstenia ? on Blechnum
I suggest to try a median section with a razor blade - important are the periphysoids on the margin. Of course the IKI reaction is necessary to check, of the hymenium and of the ascus apical ring. - My guess is a Karstenia indeed.

