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23-06-2025 04:03

Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

23-06-2025 13:25

Enrique Rubio Enrique Rubio

I would like to hear your opinion on this Scutelli

22-06-2025 13:52

DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

26-05-2025 18:09

Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

11-06-2025 16:26

Jason Karakehian Jason Karakehian

Hi everyone, I am looking for the following protol

18-06-2025 19:24

Bernard Declercq Bernard Declercq

Good evening,On Oenanthe aquatica we collected  a

17-06-2025 14:23

Josep Torres Josep Torres

Hello.A probable Hyaloscypha from last June 1st, s

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Coniochaeta discospora
Joop van der Lee, 07-05-2013 17:09
Joop van der LeeFound 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.
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Michel Delpont, 07-05-2013 18:25
Michel Delpont
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.
Joop van der Lee, 07-05-2013 19:26
Joop van der Lee
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
Michel Delpont, 08-05-2013 14:29
Michel Delpont
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.
Joop van der Lee, 08-05-2013 21:16
Joop van der Lee
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.
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