Accès membres

Mot de passe perdu? S'inscrire

11-02-2026 22:15

Rutstroemia maritima?
William Slosse William Slosse

Today, February 11, 2026, we found the following R

11-02-2026 19:28

Peziza spec. from Germany
Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

Sp
ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Hélotiale blanche sur Sambucus racemosa
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Unknown pink heliotale on sphagnum
Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

(2 different or one ?) Hypoxylon from the Algarve – on Acacia and Arbutus
Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Cistella granulosella of Hyphodiscus incrustatus?
Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

09-02-2026 11:42

Lachnum sp.
Ã…ge Oterhals

Hi forum, I found this Lachnum on old hardwood tw

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

« < 1 2 3 4 5 > »
Karstenia Idaei or K. rhopaloides?
Margot en Geert Vullings, 23-02-2024 16:26
We found these discs on the inside of loose bark of a dead Picea.
We think a Karstenia, could this be K. Idaei or K. rhopaloides?
Spores measured in water 37.6-58.38 x 2.9-3.8µ
Asci measured in water 71x12µ
Paraphyses thin cylindrical.

We tried pre-treating with KOH and staining with Lugol. The Ascus top is I+ ? Should be neg.

For Karstenia rhopaloides the spores are to thin.

We think we see periphysoids?
Thanks in advance,
Margot&Geert
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
  • message #78383
Hans-Otto Baral, 23-02-2024 17:36
Hans-Otto Baral
Re : Karstenia Idaei or K. rhopaloides?
No, but perhaps K. idaei?
Margot en Geert Vullings, 23-02-2024 18:06
Re : Karstenia Idaei or K. rhopaloides?
Hans-Otto, you mean no for the periphysoids?

Could it be K. idaei with ascus I+?
Hans-Otto Baral, 23-02-2024 20:46
Hans-Otto Baral
Re : Karstenia Idaei or K. rhopaloides?
I did not read your heading when I suggested K. idaei.

The periphysoids are pretty o.k. for Karstenia, but you are right, K. idaei I know without amyloid ring. In your specimen it is an exceptionally clearly amyloid ring.

I have not the time to check all my files so my answers are often spontaneous, I am sorry.
Margot en Geert Vullings, 24-02-2024 19:09
Re : Karstenia Idaei or K. rhopaloides?
Thank you very much and no sorry needed, we are always happy with your help.

In your paper of K. idaei on photo 7-II-2009-2 and 3  we also see an Lugol "swach" + reaction and on photo 13-VII-2008-2 also Lugol + reaction.

Kind regards, Margot&Geert
Hans-Otto Baral, 24-02-2024 20:25
Hans-Otto Baral
Re : Karstenia Idaei or K. rhopaloides?
Actually the 2008 find is strongly blue in the apical ring. It must be Enrique's images but I lost the info from where I got them in mid July 2008.

2009 is Gernot's, and I am not even sure if it has a ring.

Everything is possible: different species or variation within a species.

Zotto
Margot en Geert Vullings, 25-02-2024 18:18
Re : Karstenia Idaei or K. rhopaloides?
Thank you very much Zotto.