06-11-2021 19:59
Mlcoch Patrik
Hi,Please about help with determination of this co
06-11-2021 19:58
Riet van Oosten
Hello, Found by Laurens van der Linde, November 2
11-05-2021 15:40
Simon KennedyCan anyone help with an image of the spores of thi
05-11-2021 18:11
Ethan CrensonHello all,This was found growing on a stem of what
04-11-2021 15:26
Chris Yeates
Bonjour tous I am fairly confident about this but
04-11-2021 19:16
Stefan JakobssonOn a culm of Chamaenerion angustofolium there were
05-11-2021 12:06
Castillo Joseba
Me mandan el material seco de Galicia, recolecta
31-10-2021 12:13
Michel Hairaud
Bonjour, Est il possible de m'orienter pour cette
03-11-2021 20:45
Enrique Rubio
I would like to know your opinion on these small,
02-11-2021 17:01
Miquel Angel Perez-De-GregorioSous Castanea sativa et Corylus avellana, dans le
Pyrenopeziza/Mollisia on stems of Impatiens
Mlcoch Patrik,
06-11-2021 19:59
Hi,Please about help with determination of this collection.
Found on the dead stems of Impatiens glandulifera in the Czech Republic, 2. 9. 2021.
Marginal cells 16 x 5,5 um, excipular cells 13-15 x 10-12,5 um, dark brown. Asci IKI(+?), 35-40 X 5-7 um, paraphyses 30 x 1,8 um. Ascospores fusoid, hyaline, OCI=0-1, 7-9(9,5) x 1,7-2,5 um, Q=3,5, Me=8 x 2,3 um. KOH reaction of excipulum negative.
Any idea?? Thanks.
Hans-Otto Baral,
06-11-2021 20:53
Re : Pyrenopeziza/Mollisia on stems of Impatiens
To me this looks like a Mollisia. The crucial KOH reaction refers to the hymenium. Did you study living paraphyses? Herewith you can distinguish Pyrenopeziza which has no VBs (refractive vacuoles). To suggest a species name is difficult. M. revincta has a yellow KOH-reaction
Mlcoch Patrik,
06-11-2021 23:21
Re : Pyrenopeziza/Mollisia on stems of Impatiens
Thanks, this was microscopied in the freshes condition, what was possible.
Hans-Otto Baral,
07-11-2021 10:06
Re : Pyrenopeziza/Mollisia on stems of Impatiens
The your methods are not appropriate
- water as mountant
- don't apply pressure on the cover slip when studying sections and only very slight pressure for squash mounts.