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04-10-2023 21:58

Pablo Chacón

hola a todos,J'écris à Florent.boittin@laposte.n

04-10-2023 17:18

Louis DENY

Bonjour forumAu Ballon d'Alsace, altitude 1 100m,

04-10-2023 18:43

Marc Detollenaere Marc Detollenaere

Dear Forum,On the bark of Fagus I found some brigh

04-10-2023 14:29

Jean-Luc Ranger

Bonjour, sur tige herbacée en milieux tourbeux ,

02-10-2023 22:34

Herrera Emerson Herrera Emerson

Hi, I find this in the Teca. Can you help me pleas

02-10-2023 13:29

Petra Eimann Petra Eimann

Hello all,Found on 31.08.2023 on a hardwood branch

03-10-2023 11:07

Maria Plekkenpol

Hello,On cowdung I found these. Fb white, "sugarco

02-10-2023 21:01

Nihad Omerovic

Hello,30. 09. 2023., Mediterranean region, nex to

01-10-2023 14:57

Michael Valentine

Hello,Found on Friday, in the middle of an isolate

28-09-2023 22:11

Nihad Omerovic

Hello,Looking for opinions on this Rutstroemia; 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.