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Hans-Otto Baral Hans-Otto Baral

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Bometon Javier Bometon Javier

Apotecios 100 y 350 um, estipitados.Pararafisis la

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B Shelbourne B Shelbourne

• Macro and habitat suggest Rutstroemia, and pos

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Hi there, I found a few very small apothecia on o

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François Bartholomeeusen

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Robin Isaksson Robin Isaksson

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B Shelbourne B Shelbourne

• Macro and habitat suggest Gelatinodiscaeae.•

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Peter Welt Peter Welt

Search Looking for an item again. Who can help? T

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Asco on Tilia cordata
Per Vetlesen, 22-05-2016 21:41
Hi
It was found on bark of Tilia cordata in Stange, Norway.
Spores: 17 [18.2 ; 18.8] 20 x 6.8 [7.4 ; 7.8] 8.5 µm, Q = 2.2 [2.4 ; 2.5] 2.7 ; N = 23 ; C = 68%, Me = 18.5 x 7.6 µm ; Qe = 2.4
Asci: 77 [80.6 ; 86.4] 90 x 16.4 [17.4 ; 18.8] 19.8 µm, Q = 4.3 [4.5 ; 4.8] 4.9 ; N = 5 ; C = 68%, Me = 83.5 x 18.1 µm ; Qe = 4.6
Thanks in advance for any help.
Hilsen
Per
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Eduard Osieck, 23-05-2016 23:23
Re : Asco on Tilia cordata
Hi Per,

Did you consider Peridiothelia fuliguncta which has similar spores and occurs on Tilia bark? It is described and illustrated by Hawksworth (1985): "A redisposition of the species referred to the ascomycete genus Microthelia" (Bull. Br. Mus. nat. Hist. (Bot.) 14 (2): 43-181). I can mai you a copy of this paper.

Regards Eduard
Alain GARDIENNET, 24-05-2016 07:20
Alain GARDIENNET
Re : Asco on Tilia cordata

Hi,


Good guess from Eduard, I agree.


I posted photos in Ascofrance database.


Alain


PS : it's a fungus that is not exclusively lichenicolous.

Per Vetlesen, 24-05-2016 16:00
Re : Asco on Tilia cordata
Hi Eduard and Alain

I did not consider Peridiothelia fuliguncta, in fact I had no idea of what it was. There is a key and description of it in "Bulletin of the British Museum" 1985 by DAVID L. HAWKSWORTH, it fits very vel.
Still it would be great if you, Eduard, could email the paper you mentioned.
HAWKSWORTH writes: "Probably never lichenized".
Thank you very much for help.


Regards
Per

Eduard Osieck, 24-05-2016 19:01
Re : Asco on Tilia cordata
Hi Per
Paper just sent.
Eduard
Per Vetlesen, 24-05-2016 20:34
Re : Asco on Tilia cordata
Thanks a lot:-)
Per