18-03-2015 00:28
Francisco SÁNCHEZ
Recueillir le dernier dimanche dans le sol humide
22-03-2015 22:29
Pérez del Amo Carlos Manuel
Presunto anamorfo sobre hoja en descomposición de
24-03-2015 10:29
Gernot FriebesHi,I'm looking for help with this pyreno found on
23-03-2015 09:46
Joop van der Lee
Found on deer dung. Fruitbody: 297 um wide - 305
23-03-2015 00:29
Joop van der Lee
Found on deer dung.Fruitbody: 362x318 um, with str
Anamorph with long-necked pycnidium
Marcus Yeo,
25-07-2022 19:50
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
Charles Aron,
25-07-2022 20:41
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
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
Re : Anamorph with long-necked pycnidium
Anisomeridium is a very good suggestion!