Accès membres

Mot de passe perdu? S'inscrire

26-07-2020 21:59

Edvin Johannesen Edvin Johannesen

This one was growing on bark of an elm tree in Wes

23-07-2020 17:21

Enrique Rubio Enrique Rubio

Hi to everybodyThis pyrenomicete grew in very rott

25-07-2020 13:46

Josep Torres Josep Torres

Hola.Pequeños apotecios fotografiados sobre un pe

24-07-2020 10:44

Gernot Friebes

Hi,found on soil with hairs variable in size, up t

25-07-2020 18:40

Lothar Krieglsteiner Lothar Krieglsteiner

.. in the Alps (exact findplace can be asked), mon

25-07-2020 18:24

Lothar Krieglsteiner Lothar Krieglsteiner

... in the Alps (exact findplace can be asked), mo

25-07-2020 19:08

Lothar Krieglsteiner Lothar Krieglsteiner

.. in the Alps, montaneous region, on deciduous wo

25-07-2020 16:29

Bernard Declercq Bernard Declercq

Hi,... and this is another sordariomycete for whic

25-07-2020 16:19

Bernard Declercq Bernard Declercq

Hi,Has anyone an idea about this old Nectria-like

25-07-2020 10:33

Koszka Attila

Dear forum! What is the correct name for this spe

« < 4 5 6 7 8 > »
Uni- or bitunicate? On Ulmus glabra bark.
Edvin Johannesen, 26-07-2020 21:59
Edvin Johannesen
This one was growing on bark of an elm tree in Western Norway. The brown 1-septate spores measure 16-22 x 11-12 microns. Asci very long, ranging from 120-250 microns (7-10 thick). Apically thickened up to 5 microns. Ascus apparatus ring-shaped, staining blue in Lugol after KOH pre-treatment and water rinsing. I think I see a very faint striation on the spores, but impossible to photograph. Are we in Pleosporales or perhaps Amphisphaeriales? Asci too long and slim to be bi-tunicate? Can Pleosporales (e.g. Didymosphaeria) have IKI+ asci? Any suggestions?

Thanks.
  • message #64385
  • message #64385
  • message #64385
  • message #64385
  • message #64385
Edvin Johannesen, 26-07-2020 22:00
Edvin Johannesen
Re : Uni- or bitunicate? On Ulmus glabra bark.
Some more photos.
  • message #64386
  • message #64386
  • message #64386
  • message #64386
  • message #64386
Edvin Johannesen, 27-07-2020 15:48
Edvin Johannesen
Re : Uni- or bitunicate? On Ulmus glabra bark.
Turns out to be Amphisphaeria umbrina.  Thanks to Björn Nordén.