Accès membres

Mot de passe perdu? S'inscrire

10-03-2026 18:08

Marc Detollenaere Marc Detollenaere

Dear Forum,On stems of Arctium, I found some downy

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

07-03-2026 13:06

éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

28-02-2026 11:05

Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

07-03-2026 22:22

Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

06-03-2026 17:51

William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

« < 1 2 3 4 5 > »
Nemania on Quercus
Lothar Krieglsteiner, 14-12-2016 15:42
Lothar Krieglsteiner

... found in the National Park Eifel, Germany.


The only thing I am sure of is it is not N. serpens, because the porus is blue in IKI.


I do not find striate spores - not chestersii


I do not find a (at least not conspicuous) germ slit - not aenea var. aenea


The flesh is not whitish - not aenea var. macrospora


too large, too many perithecia for confluens ...


 


So, where am I wrong? Can somebody provide a tip.


Best regards from Lothar

  • message #46141
  • message #46141
  • message #46141
  • message #46141
  • message #46141
  • message #46141
  • message #46141
  • message #46141
  • message #46141
Eduard Osieck, 14-12-2016 17:52
Re : Nemania on Quercus
Hi Lothar,

Did you consider N. serpens var. colliculosa which unlike N. serpens shows also a blue reaction? It has been raised to species level by Granmo et al. (1999) but this is not followed by many others (why not?). The only problem with this identification are the rather large ascospores of your collection judging from the measurements given in one of your pictures (typically 10-13,5 mu).

I found this species (or variation) in October last in the eastern part of the Netherlands (Winterswijk).

Eduard
Lothar Krieglsteiner, 15-12-2016 10:12
Lothar Krieglsteiner
Re : Nemania on Quercushttp://pyrenomycetes.free.fr/nemania/keydir/dichotomickey.htm

Hi Eduard,


you are right - that was the mistake!


And the spores are a little bit large, but this is perhaps the minor problem ...


In http://pyrenomycetes.free.fr/nemania/keydir/dichotomickey.htm


I did not really consider the variety of serpens, because I thought it must have a red IKI-reaction like the typical form.


So - thank you vey much. I will deal with my specimen as Nemania (serpens var.) colliculosa now. I also doubt if something with hemiamyloid and with euamyloid asci should be considered the same species (???).


Best regards from Lothar