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Coniochaeta discospora
Joop van der Lee,
07-05-2013 17:09
Found on horse dung.Excuses for the photo's they are not so good in focus.
The fruitbody has a short neck, the neck and upper part of the fruitbody are covered with stiff short hairs with thick walls.
Asci: 99.98-115.05x11.52-11.64, 8-spores, mostly first two spores at the apex and the last one near the stalk are in vertical position, the others are in an oblique position
Spores: 11.40-12.55x8.28-9.64x5.59-6.87 um with a parallel germ sliit.
Michel Delpont,
07-05-2013 18:25
Re : Coniochaeta Tetraspora?
Hello Joop.
Still a difficult genius, should be measured spores outside the asci, it also allows you to carefully observe their shape.
You can also observe the shape of the hair, and their distribution on the surface of the fungus.
Michel.
Still a difficult genius, should be measured spores outside the asci, it also allows you to carefully observe their shape.
You can also observe the shape of the hair, and their distribution on the surface of the fungus.
Michel.
Joop van der Lee,
07-05-2013 19:26
Re : Coniochaeta Tetraspora?
OK Michel
Jacky Launoy,
08-05-2013 11:06
Re : Coniochaeta Tetraspora?
Joop,
Je pense qu'il s'agit de Coniochaeta discospora ( Auersw.) Cain ( Univ. of Totonto Studie. Biological Series 38:62 (1934) que l'on trouve sur fumier. Synoniem de Coniochaeta ligniaria fide Munck 1948. C. Tetraspora a des asques avec 4 spores et je vois dans les photo's des asques avec 8 spores. Les mesures des spores de C. discospora correspondent avec vos mesures (9) 12-14 (20) x 8-12 (-15) x 4-6 µm
Jacky Launoy
Je pense qu'il s'agit de Coniochaeta discospora ( Auersw.) Cain ( Univ. of Totonto Studie. Biological Series 38:62 (1934) que l'on trouve sur fumier. Synoniem de Coniochaeta ligniaria fide Munck 1948. C. Tetraspora a des asques avec 4 spores et je vois dans les photo's des asques avec 8 spores. Les mesures des spores de C. discospora correspondent avec vos mesures (9) 12-14 (20) x 8-12 (-15) x 4-6 µm
Jacky Launoy
Michel Delpont,
08-05-2013 14:29
Re : Coniochaeta Tetraspora?
Salut Jacky.
Bien évidement il ne s'agit pas de tetraspora, mais j'avais écarté vagans car je trouvais la taille des spores un peu importante. Je n'ai qu'une seule description, celle de F.Doveri, et celle de Checa J. qui concerne ligniaria. Si jamais tu as la possibilité, je serais intéressé par la description de Cain.
Joop, certains auteurs synonymisent ou non ces espèces proches, souvent séparées par le substrat sur lequel on peut les trouver.
Michel.
Bien évidement il ne s'agit pas de tetraspora, mais j'avais écarté vagans car je trouvais la taille des spores un peu importante. Je n'ai qu'une seule description, celle de F.Doveri, et celle de Checa J. qui concerne ligniaria. Si jamais tu as la possibilité, je serais intéressé par la description de Cain.
Joop, certains auteurs synonymisent ou non ces espèces proches, souvent séparées par le substrat sur lequel on peut les trouver.
Michel.
Joop van der Lee,
08-05-2013 21:16
Re : Coniochaeta Tetraspora?
I have examined new species today and here are the results.
Hair distribution: Dense number of long stiff hairs in the neck area, the rest of the fruitbody is covered with curved hairs. Both hairs do have thick walls.
Asci: 100.71-108.18x10.32-10.80 um.
Spores: slightly oval shaped with parallel germ slit running in the middle of side view of the spore. 10.13-11.58x8.27-9.39x4.38-5.62 um
I could only find free mature spores with frontview, measurement of the sideview spores have been done while still in the asci. But I only measured sideview spores when the germ slit was in the center.
Hair distribution: Dense number of long stiff hairs in the neck area, the rest of the fruitbody is covered with curved hairs. Both hairs do have thick walls.
Asci: 100.71-108.18x10.32-10.80 um.
Spores: slightly oval shaped with parallel germ slit running in the middle of side view of the spore. 10.13-11.58x8.27-9.39x4.38-5.62 um
I could only find free mature spores with frontview, measurement of the sideview spores have been done while still in the asci. But I only measured sideview spores when the germ slit was in the center.
