Accès membres

Mot de passe perdu? S'inscrire

01-10-2025 20:16

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I would appreciate your opinion on this yell

01-10-2025 19:47

Philippe PELLICIER

Un parasite sur les feuilles de graminées qui for

30-09-2025 20:23

Rot Bojan

Hello!I'm asking for your opinion. I think it's an

30-09-2025 22:08

Philippe PELLICIER

Bonjour, cette Otidea de petite taille de 1-2 cm c

29-09-2025 10:59

Jean-Luc Ranger

Bonjour,  Je ne sais trop où chercher ce champi

28-09-2025 12:30

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, this fungus nicely fits Lasiosphaeris hirsu

26-09-2025 23:41

Lieve Deceuninck Lieve Deceuninck

Bonjour members du forum. Merci d'avance pour tout

24-10-2024 14:39

Jean-Luc Ranger

Bonjour à tous,Découvert sur un terrain calcaire

26-09-2025 15:51

Jean-Luc Ranger

Bonjour, voici un ascome poussant sur crotte de la

23-09-2025 13:31

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

« < 1 2 3 4 5 > »
Hymenoscyphus calyculus?
Zuzana Sochorová (Egertová), 01-10-2025 20:16
Zuzana Sochorová (Egertová)Hello,
I would appreciate your opinion on this yellow Hymenoscyphus growing on a little twig, maybe of Rubus idaeus.

Asci 114-125 x 11-12 µm, H+, bb.

Ascospores (16.6) 17.7-19.2-20.8 (23.1) × (4.2) 4.3-4.7- 5 (5.9) µm, Q = (3.37) 3.70-4.07-4.54 (4.94), without cilita, not septate.

Paraphyses with strongly refractive guttules. 
Using Bernard´s key, I have arrived to H. calyculus, but OCl is lower than 5 (but many pictures at the internet also show spores with lower OCl).

  • message #83598
  • message #83598
  • message #83598
  • message #83598
  • message #83598
  • message #83598
  • message #83598
Zuzana Sochorová (Egertová), 01-10-2025 20:18
Zuzana Sochorová (Egertová)
Re : Hymenoscyphus calyculus?
*
  • message #83599
  • message #83599
  • message #83599
  • message #83599
  • message #83599
  • message #83599
  • message #83599
Hans-Otto Baral, 01-10-2025 20:58
Hans-Otto Baral
Re : Hymenoscyphus calyculus?
Hi Zuzana

it is curious that H. calyculus is so rarely recorded, when I began with Helotiales about 50 years ago I thought that it is a common species. 

No, the spores here are not really scutuloid. Some of them have a recognizably upper and lower end, but there is no clear asymmetry at the upper apex.

It must be H. epiphyllus.

The stalk here is never higher then wide, while in H. calyculus it can be >5x longer than wide.

Zotto
Zuzana Sochorová (Egertová), 01-10-2025 22:15
Zuzana Sochorová (Egertová)
Re : Hymenoscyphus calyculus?
Hi Zotto,
thank you very much.
I have ommited Phaeohelotium and went directly to Hymenoscyphus...
Z