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18-06-2021 23:08

Kosonen Timo Kosonen Timo

Hello, Any ideas on this one? Spores ca. 14 x 3,

18-06-2021 22:13

Peter Püwert Peter Püwert

HI all, a mushroom friend found this collection i

17-06-2021 15:07

Castillo Joseba Castillo Joseba

De ayer sobre un tronco viejo de haya Al verlo me

15-06-2021 22:44

Castillo Joseba Castillo Joseba

De hoy en bosque de hayasNo tiene latexA ver si ha

17-06-2021 22:59

Malcolm  Greaves Malcolm Greaves

Has anyone got a copy of the description of Peziza

18-06-2021 15:33

Juuso Äikäs

These very small (the yellow stuff is pollen) Cist

18-06-2021 17:53

Prieto Maria

Hola amigos de Ascofrance (the message will follow

17-06-2021 15:54

Khomenko Igor Khomenko Igor

For the last few years, I and others were finding

17-06-2021 17:52

Juuso Äikäs

Might've I found M. albogrisea this time? The sub

19-05-2012 09:12

Andreas Gminder Andreas Gminder

Dear collegues,does by chance anyone has this publ

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Ascobolus on wood (Picea) = A. lignatilis
Riet van Oosten, 15-01-2021 22:07
Riet van Oosten
Hello,

Found by Adria Klumpers, The Netherlands, 19-12-2020 on Picea (wood).

Could this be Ascobolus foliicola or A. epimyces?

Ascus walls scarcely blue in Melzer's.

Spore sizes: Me 17.7 x 8.1 µm (N = 15)

Greetings, Riet
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Charles Aron, 16-01-2021 11:04
Charles Aron
Re : Ascobolus on wood (Picea)

Hi Riet,


Some years ago I collected an Ascobolous from a fallen, rotten trunk or branch of Picea. I remember that there was quite a dense colony. This I IDed as Ascobolus lignatilis from Ellis and Ellis and is the only lignicolous species in that reference. It does seem quite close to foliicola both macroscopically and microscopically but with a different habitat preference. Is epimyces a soil-dwelling species?


Best wishes,


Charles.


 

Michel Delpont, 16-01-2021 11:46
Michel Delpont
Re : Ascobolus on wood (Picea)
Hello !

Nice pictures ! Rather agree with Charles for A.lignatilis. In my opinion, A.epimyces has more pointed spores at the ends with a more dense ornamentation, and A.lignicola an on average larger spore width with a more reticulate ornamentation.


Michel.

Nicolas VAN VOOREN, 16-01-2021 11:47
Nicolas VAN VOOREN
Re : Ascobolus on wood (Picea)
Based on your data and pictures I would say this is A. lignatilis.
I have no experience of A. epimyces but based on Brummelen's description the latter has more fusoid ascospores with anastomosing ridges. This is not the case in the ascospores of your collection.
This is not a common species.
Riet van Oosten, 16-01-2021 12:23
Riet van Oosten
Re : Ascobolus on wood (Picea)
Thank you very much for your help Charles, Michel and Nicolas!

Hi Charles, Van Brummelen, pag. 130 (A. epimyces) says: "on rotten wood, on rotten leaves of trees and old paper".

Thank you for the compliments Michel! :-)
Charles Aron, 16-01-2021 16:47
Charles Aron
Re : Ascobolus on wood (Picea) = A. lignatilis

Hi again Riet,


Thanks for the reference-have just had a look and the fusoid spores seem characteristic of epimyces.


Charles.

Peter Püwert, 16-01-2021 22:42
Peter Püwert
Re : Ascobolus on wood (Picea) = A. lignatilis
Happy New Year everybody !

Yes, Ascobolus epimyces is a quite rare species. In our region we find Ascobolus lignatilis frequently on dung.

Regards Peter.
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Riet van Oosten, 17-01-2021 10:26
Riet van Oosten
Re : Ascobolus on wood (Picea) = A. lignatilis
Happy new year Peter! 
Thank you very much for the beautiful pictures! 
For me it's the first species Ascobolus I see, so it's very nice to compare!