06-05-2024 10:02
François BartholomeeusenGood morning,At the end of an excursion in De Zegg
05-05-2024 09:59
Gernot FriebesHello,I failed to identify this anamorph, which gr
19-04-2015 20:20
Enrique Rubio
Hi again Could you help me with this paper? NANN
30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van Oosten
Hello, Found by Laurens van der Linde on Rubus fr
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
29-04-2024 21:32
Robin Isaksson
Hi! Found in Sweden. Ascomata with haris, se
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