Accès membres

Mot de passe perdu? S'inscrire

27-04-2026 20:52

Mollisia or related genus from Portugal - with quite peculiar character
Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

27-04-2026 18:48

Micropodia pteridina?
Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 17:41

another anamorph on monocotyleous remains from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, same leaf than the last post. The con

27-04-2026 18:05

bright green minute anamorph on Citrus aurantius-twig from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

... still attached at standing tree. The green con

27-04-2026 17:16

anamorph on monocotyleous leaves from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, moist lying.The conidiomata look like

27-04-2026 12:54

Spiral conidial crust
Steve Clements

Bonjour. Ce petit champignon blanc résupiné et

27-04-2026 09:59

Microdiplodia henningsii
Pauline. Penna

Bonjour Can anyone advise me on these pycnidia fo

26-04-2026 21:08

Ramularia sp ?
William Slosse William Slosse

Several species of Ramularia occur on Rumex that I

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

lachnum pudicellum
Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

« < 1 2 3 4 5 > »
Arachnopeziza delicatula
Louis DENY, 06-04-2026 11:07
Bonjour forum,

Trouvé sur bois de feuillu très dégradé cette arachnopeziza, qui ressemble à A. delicatula des dossiers de Zotto. Les spores plus courtes et plus larges m'ont l'air caractéristique. (Caluler le nombre précis de septa m'a été impossible)

J'ai lu sur ce forum des discussions sur la distinction A. delicatula/A. aurata.

La question est-elle tranchée: A .delicatula est-elle une ''bonne'' espèce?

Merci de vos lumières
  • message #85029
  • message #85029
  • message #85029
  • message #85029
  • message #85029
Hans-Otto Baral, 06-04-2026 16:49
Re : Arachnopeziza delicatula
At first glance yes, but I remember the issue is difficult. I think Kosonen treats the species in his paper.
Ethan Crenson, 06-04-2026 17:20
Re : Arachnopeziza delicatula
I have struggled with the distinction between A. delicatula and A. aurata.  I have these comments handy on my desktop:

"[A. delicatula] can be distinguished from A. aurata by the width of the spores that are on average wider in A. delicatula (3 – 3.5 ?m wide in the longest spores) and by the Q-value that is in average less than 20 in A. delicatula and above 20 in A. aurata."

"We suggest that A. aurata is distinguished from A. delicatula by narrower, pointed and straight or curved spores, with regularly 6–7 septa."


Taxonomy and systematics of Hyaloscyphaceae and Arachnopezizaceae
T. Kosonen, S. Huhtinen, K. Hansen
Louis DENY, 06-04-2026 17:48
Re : Arachnopeziza delicatula
Zotto, Ethan,

Thanks for your adice and information.
I will then call it delicatula.
Kosonen Timo, 06-04-2026 17:55
Kosonen Timo
Re : Arachnopeziza delicatula
yep, I agree on delicatula. The spores of aurata resemble long (e.g. Pinus) needles. The difference is clear once compared side by side.

Timo
Louis DENY, 06-04-2026 19:01
Re : Arachnopeziza delicatula
Timo,
Many thanks for your confirmation
Louis