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12-11-2018 15:38

PASCAL DUBOC

Bonjour sur tige herbacée en milieu marécageux,

11-11-2018 13:43

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Que pensez-vous de cet A

12-11-2018 15:56

Castillo Joseba Castillo Joseba

De esta mañana en suelo arenoso junto a pinar y c

11-11-2018 15:12

Castillo Joseba Castillo Joseba

Me mandan  esta muestra seca desde Galicia,   en

11-11-2018 19:33

Thorben Hülsewig

Hi there, today i found on stems of Eupatorium sp

08-10-2018 14:51

Edvin Johannesen Edvin Johannesen

I came across these dense mats of apothecia seated

11-11-2018 18:41

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Suite à la publication d'un article d'Eka

04-11-2018 12:06

Thorben Hülsewig

Hi there, two days ago i found this Hymenoscyphus

11-11-2018 14:33

Castillo Joseba Castillo Joseba

Me mandan esta muestra seca desde Galicia,   fue

08-11-2018 22:48

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Que pensez-vous de cet A

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Allophylaria zenobia on Quercus robur leafs
Johan Myhrer, 18-10-2018 23:23
Have been struggeling with these for a while, found few very dry specimens a couple of weeks ago on decomposed Quercus robur leafs (central Sweden), today I found some more and finally I got a name on them, I think? Allophylaria zenobia is not known from Sweden so I'm looking for a description. Anyone have Svrcek's revision from 1984?

Asci: ~100x12µm

Spores: ~16x5µm

Ascus apex IKI+ red.

Best wishes from Johan Myhrer!
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Viktorie Halasu, 19-10-2018 07:05
Viktorie Halasu
Re : Allophylaria zenobia on Quercus robur leafs
Hello,

you meant this source? Svrcek (1984) [1985]: A taxonomic revision of inoperculate discomycetes described by J. Velenovsky in the genus Helotium, preserved in National Museum, Prague. Acta Mus. Nat. Pragae, Ser. B., Hist. Nat. 40 (3-4): 129-216.

All issues of Acta mus. nat. Pragae were online not so long ago but now there's new version of the museum website and I didn't find it there anymore. You can download it from my googledisk (ca 15 MB): https://drive.google.com/open?id=166ZURiWcLX61m2uiMH6rcFaYIsyD9Rmn

Viktorie  
Hans-Otto Baral, 19-10-2018 08:23
Hans-Otto Baral
Re : Allophylaria zenobia on Quercus robur leafs
Dear Johan
I agree, but I am in strong doubt about the name Conchatium zenobiae. Svrcek's redescription is clearly not an Allophylaria but rather a Hymenoscyphus, perhaps H. syringaecolor, although the spores are not constricted and the asci inamyloid.

So I suggest to use the name A. nervicola. There is some variation in spore size so that I made two folders, one 12-15 and one 14-18 µm. The type of A. nervicola belongs more to the 12-15 range. Velenovsky measured 12-16 but his measurements are often doubtful.

Did you measure more spores to get a range? I would also like to add the collection date and site to your sample.

Zotto
Johan Myhrer, 19-10-2018 08:45
Re : Allophylaria zenobia on Quercus robur leafs
Goodmorning!

I actually considered nervicola early and it feels alot more "comfortable". So I happily agree :-)

Measured 10+ spores.

Collected 2018-10-18
Sweden, Hälsingland, Bergsjö, Bjåsta
If you also need coordinates, I have them att home. Currently at work.

Best wishes from Johan Myhrer!
Johan Myhrer, 19-10-2018 08:52
Re : Allophylaria zenobia on Quercus robur leafs
I give you spore range tomorrow...
Hans-Otto Baral, 19-10-2018 10:27
Hans-Otto Baral
Re : Allophylaria zenobia on Quercus robur leafs
Thanks, I overlooked the indirectly mentioned date, but with yesterday you obviously meant the 19.Oct. not 17. Yes, please also coordinates.
Johan Myhrer, 20-10-2018 16:24
Re : Allophylaria zenobia on Quercus robur leafs
15-18,5x5-6µm.

61°59'23.9"N 17°1'36.3"E

/Johan M
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Hans-Otto Baral, 20-10-2018 21:12
Hans-Otto Baral
Re : Allophylaria zenobia on Quercus robur leafs
Thanks, so it is the more frequent large-spored variant.
Johan Myhrer, 20-10-2018 21:44
Re : Allophylaria zenobia on Quercus robur leafs
Thanks to you Zotto! :-)

Nervicola is not known in Sweden previously, atleast according to Checklist of the non-lichenized ascomycetes of Sweden (Eriksson 2014) and Dyntaxa (Swedish taxonomic database).

/Johan M