06-05-2026 11:25
Castillo Joseba
Me mandan el material seco de Galicia (España) re
06-05-2026 17:23
Thomas Læssøehttps://svampe.databasen.org/observations/10594257
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
05-05-2026 22:40
Gernot FriebesHi,I believe this is a Plagiostoma growing on a Sa
04-05-2026 18:13
Stephen Martin Mifsud
ID request for what seems to be a true aquatic fun
04-05-2026 16:39
Stephen Martin Mifsud
ID request: This specimen was collected in Malta o
28-07-2011 18:31
Alex Akulov
Dear FriendsToday I made the pdf file of Velenovsk
04-05-2026 09:50
Castillo Joseba
Me mandan el material seco de Galicia,(España) re
02-05-2026 12:42
Alain BRISSARDBonjour à tousJeuidi 30 avril dernier on m'a remi
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
most probably Pezicula acericola. Try Lugol without KOH. I bet the apical apparatus will turn bright red (hemiamyloid).
Regards
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
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 Kåre Homble for helping me identifying it.
Regards
Per