19-06-2025 22:19
Björn NordénBig thanks in advance.
11-06-2025 16:26
Jason Karakehian
Hi everyone, I am looking for the following protol
18-06-2025 19:24
Bernard Declercq
Good evening,On Oenanthe aquatica we collected a
18-06-2025 16:24
Andgelo Mombert
Bonjour,Un minuscule stade imparfait, qui pousse s
13-06-2025 16:34
Andgelo Mombert
Bonjour,Un petit discomycète qui me résiste. Il
17-06-2025 12:10
Castillo Joseba
Del pasado dia 4 en bosque de hayas, en tierraA
12-03-2025 17:54
Karl Soler KinnerbäckHi all!Do you agree with Scutellinia hyperborea? P
17-06-2025 12:02
Castillo Joseba
Del pasado sabado, en bosque de hayas y avellanos,
13-06-2025 09:41
Josep Torres
Hello.A cerebriform ascomycete sprouting scattered
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