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27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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Strong KOH+ yellow reaction in Peziza
Perz Piotr, 19-09-2006 00:02
Hi,

I have collected this species, and amyloid ascus apex tells me, this is Peziza (Peziza atrospora ??).
I does not have experience with this Peziza and three things are strange for me.

1. Hymenium is coverered by red/brown/purpur gel, KOH- and IKI-
2. On ectal excipulum are hyaline, thin-walled, smooth, 0-2 septate hairs, 50-100µm x 5-12µm, some with hyaline gelatinous exsudate.
3. Here is very strong, for a long time KOH+ reaction. When added KOH the whole excipulum, medulla und hymenium going strong yellow (like paraphyses in Mollisia rosae).

Is this KOH reaction normall for this (or also other) Peziza ? And this gel on hymenium? And the hairs ?

best wishes
Pimpek
  • message #969
Perz Piotr, 19-09-2006 07:25
Micro 001 - Gel on hymenium
Micro 001 - Gel on hymenium

  • message #970
Perz Piotr, 19-09-2006 07:26
Re:Strong KOH+ yellow reaction in Peziza
Micro 002 - hairs

  • message #971
Perz Piotr, 19-09-2006 07:26
Re:Strong KOH+ yellow reaction in Peziza
Micro 003 - yellow KOH reaction

  • message #972
Jacques Trimbach, 19-09-2006 16:18
Re:Strong KOH+ yellow reaction in Peziza
Un Pachyella ? ? ?
Nicolas VAN VOOREN, 20-09-2006 18:48
Nicolas VAN VOOREN
Re:Strong KOH+ yellow reaction in Peziza
Pourrait-on avoir des données microscopiques plus complètes (spores notamment) ? Avec si possible un dessin car personnellement je ne distingue rien sur ces photos qui aide à la détermination...
Perz Piotr, 20-09-2006 23:20
Re:Strong KOH+ yellow reaction in Peziza
Hi Jacques & Nicolas,

Currently I'm waiting for spore print. Spores are with grob-ornamentation, w/o apiculi, with 1 or 2 rops of oil. When I have some free spores then I will make a good drawnings.

Pimpek
Perz Piotr, 23-09-2006 00:31
Re:Strong KOH+ yellow reaction in Peziza
Hi everybody,

My ?Pachyella (?Peziza) is fully fine mature and I have a lot o free, mature spores on glass :)

Here is a table in full resolution: http://wwkk.mikologia.pl/temporary/ascofrance/20060917_006.jpg
  • message #978
NC NC, 25-09-2006 15:48
Re:Strong KOH+ yellow reaction in Peziza
Certainly seems to be a Pachyella. A section through the margin is your best bet in understanding the difference between Peziza and Pachyella. See the papers by Pfister. Several species have warted ascospores.

Dick
Jacques Trimbach, 26-09-2006 19:15
Re:Strong KOH+ yellow reaction in Peziza
cf. Pachyella adnata (Berk.& Curt.) Pfister . Verifier la présence de " hyphoïd hairs" sur l'excipulum ectal, beignant dans un gel.