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12-03-2026 16:17

Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

14-03-2026 13:51

Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

12-03-2026 15:45

Åge Oterhals

Dear forum,I found this small discomycete on a ver

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

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

12-03-2026 14:37

David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Bruno Coué Bruno Coué

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09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, 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