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11-03-2026 14:14

Scopinella on Dryas octopetala
Gernot Friebes

Hi,I would like to share a collection of Scopinell

15-09-2020 17:27

Thyridaria sp.
Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte décortiquée de Berbe

10-03-2026 18:08

Orange discs on Arctium
Marc Detollenaere Marc Detollenaere

Dear Forum,On stems of Arctium, I found some downy

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

07-03-2026 13:06

Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

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

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

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Hysteropatella elliptica?
Per Vetlesen, 12-09-2016 09:56
Hi everybody
It was found on bark of Ulmus glabra in Stange, Norway. I think it is a Hysteropatella and it looks like H. elliptica, but I find little literature about it on internet. It has some greenish pigment in the top of the hymenium (does not show on photo because the microscope camera do not show colors well), IKI-.
Spores (17.7) 18.3 - 21.6 (22.8) × (5.6) 5.7 - 6.4 (6.6) µm; Q = (2.8) 3 - 3.7 (3.8) ; N = 30;Me = 20.1 × 6.1 µm ; Qe = 3.3
Is it H. elliptica or another species that I have overlooked?
Thanks in advance for help!
Regards
Per
  • message #44893
  • message #44893
  • message #44893
Hans-Otto Baral, 12-09-2016 10:16
Hans-Otto Baral
Re : Hysteropatella elliptica?
Interesting case! H. elliptica is known to me only from Salix, but the characters would fit (though I see blusih pigment in the hymenium in H. elliptica). H. prostii is only known from Malus and has shorter spores (rarely over 20 µm, elliptica mostly over 20 µm).

How sure are you with Ulmus. Is it a standing dead tree with detaching bark?
Per Vetlesen, 12-09-2016 10:54
Re : Hysteropatella elliptica?
Yes, I'm quite sure it is Ulmus. It is a fallen tree still alive and growing; you can see the leaves from new branches along the stem on the pic. As I understand H. prostii spores is about 2,8 L/W and H elliptica 3,2 which fit mine well and exclude H. prostii I think. And I see you have written "schwarzgrünliches Exsudat" on your drawing "Hysteropatella elliptica, HB 3468".
  • message #44895
Hans-Otto Baral, 12-09-2016 11:55
Hans-Otto Baral
Re : Hysteropatella elliptica?
Really surprizing! Yes, this blueish astonished me, rather olive was in my mind.
Per Vetlesen, 12-09-2016 13:03
Re : Hysteropatella elliptica?
Hi Zotto,
I agree olive may be a better description of the color. Thank you very much for your comments.
Regards
Per