25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by JÃ
11-02-2026 22:15
William Slosse
Today, February 11, 2026, we found the following R
11-02-2026 19:28
Lothar Krieglsteiner
on small deciduous twig on the ground in forest wi
10-02-2026 17:42
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me donner
10-02-2026 18:54
Erik Van DijkDoes anyone has an idea what fungus species this m
09-02-2026 20:10
Lothar Krieglsteiner
The first 6 tables show surely one species with 2
09-02-2026 14:46
Anna KlosGoedemiddag, Op donderdag 5 februari vonden we ti
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
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.Â
Any idea?? Thanks.Â
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.