08-11-2025 00:29
Francois Guay
I found this species in Quebec, Canada, on herbace
04-11-2025 09:07
Josep Torres
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04-11-2025 12:43
Edvin Johannesen
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03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
Chaetosphaeria conidial stage?
Jenny Seawright,
03-03-2015 17:21
Hello all, Would I be right in thinking that the images below show the conidiophores of a Chaetosphaeria, and if so possibly of C. innumera?
Very small perithecia on dead wood of a Corylus branch, surrounded by numerous dark conidiophores. Conidiophores septate, brown with pale tips, 95-145 x 5 µm, conidia 4-5 x 3-4 µm. Not an ascus or spore to be seen!
With regards,
Jenny
Chris Yeates,
03-03-2015 22:55
Re : Chaetosphaeria conidial stage?
Hi Jenny
yes you appear to have a Chloridium there, one of the rather wide range of Chaetosphaeria anamorphs (many of which begin with a 'C' oddly). It's a pity you don't have asci & ascospores as this would probably result in a determination; I would be reluctant to express a definite opinion based on anamorph alone.
I shall send a couple of useful papers to you.
Best wishes
Chris
yes you appear to have a Chloridium there, one of the rather wide range of Chaetosphaeria anamorphs (many of which begin with a 'C' oddly). It's a pity you don't have asci & ascospores as this would probably result in a determination; I would be reluctant to express a definite opinion based on anamorph alone.
I shall send a couple of useful papers to you.
Best wishes
Chris
Jenny Seawright,
04-03-2015 10:13
Re : Chaetosphaeria conidial stage?
Thanks for your reply Chris - at least I was on the right track! Also thank you for the very useful papers.
Jenny
Jenny