04-07-2025 20:12
Josep Torres
Hello.A fungus growing on the surface of a trunk o
20-06-2025 08:33
Josep Torres
Hello.Small, blackish, mucronated surface grains s
28-06-2025 16:00
Josep Torres
Hello.A tiny fungus shaped like globose black grai
04-07-2025 12:43
Castillo Joseba
me mandan el material seco de Galicia (España)
03-07-2025 18:40
Castillo Joseba
me mandas el material seco de Galicia (España) re
03-07-2025 20:08
Francois Guay
I found this interesting yellowish asco growing on
01-07-2025 23:37
Josep Torres
Hello.A Pleosporal symbiotic organism located and
02-07-2025 17:26
Yanick BOULANGERBonjourRécolté sur une brindille au fond d'un fo
02-07-2025 18:45
Elisabeth StöckliBonsoir,Sur feuilles d'Osmunda regalis (Saulaie),
02-07-2025 09:32
Nicolas VAN VOOREN
Hello, bonjour.Here is the paper I'm searching for
unknown chaetomium
Joop van der Lee,
13-11-2013 14:20
Found on horse dung also found on sheep dung in the same area.Perithium is covered with non septated, non crustated, thickwalled curled hairs 2.7u8-3.48 um wide
Upper part has rigid stiff and curled, septated thick walled hairs 4.27-5.22 um wide.
Asci: 8-spored, 42.39x11.24 um
Spores: lemon shaped, 8.51-9.38xs7.41-7.96x6.32-6.91 um
When young they have an olive-green colour.
It also has a funnel to assist in releasing spores, when process is completed only the fruitbody with rigid non curling hairs remain.
Norbert Heine,
13-11-2013 17:45
Re : unknown Chaetomium
Hello Joop,
species of the genus Chaetomium are difficult to determinate!
It needs a lot of literature like Arx et al - The Ascomycete Genus Chaetomium, 1986 or Doveri - An update on the genus Chaetomium, PdM 29, 2008.
And it needs a lot of experience and patience.
Even then the determination is not easy!
There are some species with nearly the same spore size and similar hairs!
Maybe that your species is Ch. crispatum, but Ch. convolutum is also an option.
The common Ch. bostrychodes has similar, but slightly smaller spores.
An updated world wide key you can find in the latest work by Francesco Doveri.
http://www.mycosphere.org/pdfs/MC4_4_No17.pdf
Best wishes
Norbert
species of the genus Chaetomium are difficult to determinate!
It needs a lot of literature like Arx et al - The Ascomycete Genus Chaetomium, 1986 or Doveri - An update on the genus Chaetomium, PdM 29, 2008.
And it needs a lot of experience and patience.
Even then the determination is not easy!
There are some species with nearly the same spore size and similar hairs!
Maybe that your species is Ch. crispatum, but Ch. convolutum is also an option.
The common Ch. bostrychodes has similar, but slightly smaller spores.
An updated world wide key you can find in the latest work by Francesco Doveri.
http://www.mycosphere.org/pdfs/MC4_4_No17.pdf
Best wishes
Norbert