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21-12-2025 21:32

Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 00:47

Phylloscypha boltonii
Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:40

recherche de références biblio
Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

21-12-2025 21:31

Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

21-12-2025 21:31

Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

21-12-2025 12:34

Nectria ??
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

20-12-2025 23:08

Malvipezia pauli !
Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

21-12-2025 09:32

Spherical Pyrenomycete
Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 01:54

Ophiostoma
David Chapados David Chapados

Hi,Would it be possible to find the species with t

20-12-2025 15:47

Greenish asco on pine?
Mirek Gryc

Hi.These grew on pine wood that was heavily covere

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Yellow discomycete
Per Vetlesen, 08-12-2015 11:37
Hei
I found this Ascomycete on a log of a dead hardwood tree (Acer platanoides?) in Stange, Norway.
Spores: 20.9 [25.6 ; 27.8] 32.5 x 5.7 [6.6 ; 7] 7.8 µm, Q = 2.9 [3.8 ; 4.2] 5 ; N = 29 ; C = 95%. Me = 26.7 x 6.8 µm ; Qe = 4
Asci: 107.9 [120.2 ; 128.4] 140.7 x 14.5 [15.4 ; 16.1] 17 µm. Q = 6.7 [7.6 ; 8.2] 9.1 ; N = 16 ; C = 95%. Me = 124.3 x 15.7 µm ; Qe = 7.9

Thanks in advance for help!


Regards


Per

  • message #39371
  • message #39371
Martin Bemmann, 08-12-2015 11:53
Martin Bemmann
Re : Yellow discomycete
Hei Per,

most probably Pezicula acericola. Try Lugol without KOH. I bet the apical apparatus will turn bright red (hemiamyloid).

Regards
Martin
Per Vetlesen, 08-12-2015 13:30
Re : Yellow discomycete
Hei Martin.

Yes, you are right, it became red (redder than in the photo). I have looked at data about P.acericola on Internet and it seems to fit very well with my disco. As far as I can see it is not recorded in Norway before!


Thank you very much!


Regard
Per

  • message #39374
Per Vetlesen, 13-12-2015 22:10
Re : Yellow discomycete
Hi Martin,
I have now checked it up with Gerard J. M. Verkley's work: A monograph of the genus Pezicula and its anamorphs, and the descriptions/comments by Irina Morozova/Stip Helleman: http://www.ascofrance.com/forum/17358/pezicula-acericola-aesculea-what-is-the-difference
Just to be sure I have re-measured the ascospores: L/W = 2.9 [4 ; 4.3] 5.4 ; N = 100. I found several bluntly hooked spores, and with the asci's length 120.2 - 128.4 µm and paraphyses' apical cell less than 4,5 µm in diameter, it fits very well with Pezicula aesculea.
Thank you for guiding me to the genus.

And thanks to KÃ¥re Homble for helping me identifying it.

Regards
Per