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29-03-2024 14:37

Michel Hairaud Michel Hairaud

Bonjour , Voici une nouvelle récolte de cette be

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Michel Hairaud Michel Hairaud

Bonjour, Je recherche la description du genre Mac

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Juuso Äikäs

These little black ascos were growing on a dead, d

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Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

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B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

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Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

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DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

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michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

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Hypocopra
Joop van der Lee, 02-01-2019 23:34
Joop van der LeeFound on cow dung.

Perithecia: young one 158.6x156.3 um (neck excluded), neck 29x55.1 um (photo-2); mature one 222x241 um (neck excluded), neck 53.5x76.7 um (photo-3).
Ascus: 95.1x11.8 um, 8 spores.
Spores: 14.6-16.3x6.5-7.2 um, uniseriate, longitudinal germ slit over length of spore.


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Norbert Heine, 03-01-2019 23:04
Norbert Heine
Re : Unknown asco
You should search in the genus Hypocopra, Joop.

But I don't know  a species with this sporesize and a full length germ slit.

I also miss a stroma.

A photo of the ascus tip with Melzer's reagent would be useful.

Sincerely, Norbert
Joop van der Lee, 04-01-2019 00:04
Joop van der Lee
Re : Unknown asco
Hello Norbert,

I was also thinking about Hypocopra but also missed a stroma.
I will try to find another species and look for more specifics.

Thanks for the info I will ask David Malloch if he has some more info.

Joop


Joop van der Lee, 04-01-2019 16:54
Joop van der Lee
Re : Unknown asco
Hello Norbert,

David did send me documentation from Cain about Hypocopra, if you do not have it I can send it to you.
I do have a photo from the top of an ascus, is this one sufficient enough or do you need more?
Further investigation of the photos revealed that the germ slit does not run in the full length of the spore but between 8-10 um.

In my opinion if we take Hypocopra into account the measurements of the spores do correspond to H. parvula (species # 20) as indicated in New species of Hypocopra (Xylariaceae)' by J. C. Krug and R. F. Cain. But this species is described by D. Griffiths (1901) in  The North American Sordariaceae Mem. Torre Bot. Club, 11: 1-134 and I do not hold that document.

I also checked the genus Podosordaria but no comparison


Greetings,

Joop
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