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29-12-2025 23:20

Sordariomycetes
éric ROMERO éric ROMERO

Bonjour, Une récolte du mois d'août 2025 en tou

30-12-2025 16:44

Tubercularia aff. lateritia
Pascal Ducos

Bonjour,Une anamorphe rose stipitée, très nombre

30-12-2025 17:14

Asco brun sur renouée du Japon (Reynoutria japonica) (d'Albert Grobelny)
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous aider Albe

30-12-2025 15:31

Starform
Johan Boonefaes Johan Boonefaes

I found this unknown star form by the microscopy o

29-12-2025 10:15

Propolis sp. on Pinus sylvestris
Hulda Caroline Holte

Hello, I found and collected this propoloid ascom

30-12-2025 09:04

Pyrenomycete on rosemary
Josep Torres Josep Torres

Hello.A Pyrenomycete sprouting sparsely but very d

29-12-2025 17:44

Lamprospora ? laquelle ?
Isabelle Charissou

Bonjour,J'aimerais savoir si d'autres personnes au

12-11-2021 00:03

White dots on pine
Lepista Zacarias

Hi everybody,A week ago in my fiels trip I noticed

29-12-2025 17:51

En Rosmarinus
Blasco Rafael Blasco Rafael

Hola, me pueden ayudar con esta muestra.Recogida s

29-12-2025 17:12

asco imparfait et oïdium sur tige morte de Polygonatum odoratum
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

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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

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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