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25-03-2026 22:23

Orbilia with resin deposits
Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

25-03-2026 20:53

Didymopsis helvellae on Helvella?
François Bartholomeeusen

Dear forum members,On 23 March 2026, I found sever

23-03-2026 20:16

Coprotus 210226 315
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

24-03-2026 15:44

Leptodontidium cf. trabinellum
Åge Oterhals

I hope someone can confirm the name of this collec

25-03-2026 15:06

Hyaloscypha albohyalina à confirmer
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

25-03-2026 13:54

Litterature on Eutypa
Enrique Rubio Enrique Rubio

Does anyone know where I could download Paoletti's

25-03-2026 15:46

Schizoxylon ou proche
Michel Hairaud Michel Hairaud

Bonjour, Je sollicite de l'aide pour cette récol

24-03-2026 19:59

Sclerotinia binucleata?
William Slosse William Slosse

Hello everyone,On 23/03/26, I found the following

21-03-2026 15:13

MYXOMYCETICOLOUS FUNGI
Lepista Zacarias

Hello everyone, Does any one know of any literatu

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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 Kåre Homble for helping me identifying it.

Regards
Per