Accès membres

Mot de passe perdu? S'inscrire

05-05-2025 10:09

Nicolas Suberbielle Nicolas Suberbielle

Re-bonjour,Cet ascomycète trouvé et étudié par

10-05-2025 18:47

David Chapados David Chapados

Hi, Does anyone have an idea of what this could b

09-05-2025 16:01

Thomas Flammer

I found a black cushon which might eventually be 

09-05-2025 19:10

Enrique Rubio Enrique Rubio

Hi to everybody.This Orbilia (apos up to 0.5 mm),

02-05-2025 13:29

Isabelle Charissou

Bonjour, j'aimerais savoir s'il y a eu des public

06-05-2025 13:37

Thomas Flammer

Munk, Anders (1953). The System of the Pyrenomycet

08-05-2025 20:50

Andreas Jacob

Good evening, due to contstant drought I started

07-05-2025 18:29

Francois Guay Francois Guay

I found this small hyaline ascomycete on moist, de

08-05-2025 02:22

Francois Guay Francois Guay

I found this white, hairy ascomycete on the bark o

08-05-2025 18:32

Ethan Crenson

Hello all, I was looking at leaves of Yucca from

« < 1 2 3 4 5 > »
Anamorph with long-necked pycnidium
Marcus Yeo, 25-07-2022 19:50
I am baffled by this anamorph. It looks distinctive but I've been unable to put a name to it.

It was growing on decaying plant material on a cliff ledge at 530m alt in the English Lake District. Substrates appeared to include grass stems & leaves (probably Festuca sp), petioles of Alchemilla alpina leaves and bryophytes.

The pycnidia are superficial, with a swollen base ca 150-200 µm wide & a long neck (up to 700 µm). A notable feature is that the conidia are extruded through the neck in a long persistent cylinder. Conidia are ellipsoid, hyaline, 0-septate & 4-5 x 3 µm.

Any help would be very welcome.

Marcus

  • message #73494
  • message #73494
  • message #73494
  • message #73494
  • message #73494
Charles Aron, 25-07-2022 20:41
Charles Aron
Re : Anamorph with long-necked pycnidium

Hi Marcus,


I remember something very similar to this, with an ascus-like cylinder full of conidia, posted on this forum; I think it was on ferns but I can't remember what the ID was! Perhaps this will jog somebody's memory!


Best wishes,


Charles.

David Malloch, 25-07-2022 21:11
David Malloch
Re : Anamorph with long-necked pycnidium
This looks a lot like an ascomycete. Have you checked the very young structures to see if they contain spherical asci or indications of conidiogenesis?
Marcus Yeo, 25-07-2022 21:51
Re : Anamorph with long-necked pycnidium
I'm fairly certain the spores were formed at the apex of short, hyaline conidiogenous cells - but I forgot to take a picture of this!
Adrian Carter, 26-07-2022 11:14
Re : Anamorph with long-necked pycnidium
The long cirri of conidia remind me of the anamorph of Anisomeridium polypori. The long neck excludes that species but possibly a different Anisomeridium. Just an idea.
Franz Berger, 02-08-2022 23:33
Franz Berger
Re : Anamorph with long-necked pycnidium
Anisomeridium is a very good suggestion!