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Bernard Declercq Bernard Declercq

Dear all, I am looking for the description and ac

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Dear all, a week ago this cushen formed species w

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Thierry Blondelle Thierry Blondelle

Bonjour,Récolte sur une brindille dans une tourbi

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Juuso Äikäs

A couple days ago I found some Mitrula fruitbodies

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Hardware Tony Hardware Tony

These apothecia directly growing on a resupinate,

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Hello.An anamorph located in nature, on the surfac

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Thomas Flammer

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Yesterday I found some white Mollisias growing on

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Louis DENY

Sur sphagnum sp dans la tourbière des Pîles à S

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Spooren Marco Spooren Marco

Hello, Does someone has a PDF of Von Arx"article

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unknown pyrenomycet 2
Gernot Friebes, 29-03-2009 15:18
Hello,

here is my second pyrenomycet I found yesterday. It grew on a thin twig of a deciduous tree. Spores: 21-23 x 5,5-6,5 µm.

Best wishes,

Gernot Friebes
  • message #7266
Gernot Friebes, 29-03-2009 15:19
Re:unknown pyrenomycet 2
perithecia
  • message #7267
Gernot Friebes, 29-03-2009 15:24
Re:unknown pyrenomycet 2
spores
  • message #7268
Jacques Fournier, 29-03-2009 15:35
Jacques Fournier
Re:unknown pyrenomycet 2
Hi again,
the large allantoid spores could fit Eutypella dissepta (Diatrypaceae) but you need further data to support it.
Please make a vertical section to see how perithecia are arranged, and two slides: one in water or Congo red to see if asci are spindle-shaped and long stipitate, another in Melzer's reagent after pretreatment in 3% KOH to check the presence and reaction of apical ring.
More soon!
Jacques
Gernot Friebes, 29-03-2009 18:09
Re:unknown pyrenomycet 2
Hello Jacques,

thank you for your good tip. The asci are indeed long stipitate and don't have any reactions in Melzer's reagent.

At first a picture of the perithecia.

Best wishes,

Gernot
  • message #7277
Gernot Friebes, 29-03-2009 18:09
Re:unknown pyrenomycet 2
spores and asci
  • message #7278
Jacques Fournier, 29-03-2009 18:22
Jacques Fournier
Re:unknown pyrenomycet 2
in Eutypella dissepta the apical ring often does not react clearly with iodine. The configuration of the perithecia within the stroma fits E. dissepta. Moreover, the structure of the wood in cross section is much like that of Ulmus, the usual host of this fungus.
I think you can keep this name
Jacques