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20-05-2025 22:15

Asco at the base of decaying fern
Francois Guay Francois Guay

I found this ascomycete at the base of a dead fern

30-05-2025 17:54

Petit disque poilu sur Urtica
Louis DENY

Hello forum!Touvé près de Belfort, altitude 350m

31-05-2025 00:51

Orbilia with fusiform spores
Ethan Crenson

Hello, Last week in New York City this Orbilia wa

30-05-2025 10:20

Velutarina
Elisabeth Stöckli

Bonjour, Sur branches mortes de Salix en place (m

30-05-2025 14:40

Black ascomycete.
Josep Torres Josep Torres

Hello.An ascomycete from last May 10th, sprouting

30-05-2025 17:55

Petit disque poilu sur Urtica
Louis DENY

Hello forum!Touvé près de Belfort, altitude 350m

30-05-2025 12:53

Discomycete on Pellia (liverwort)
Gernot Friebes

Hi,I'm struggling to find a name for this species.

17-05-2025 18:52

Gloeotinia sp. ?
Francois Guay Francois Guay

I found this interesting asco in Quebec,Canada las

28-05-2025 21:19

Conidiospores on rose twig and twig on Sambucus Nigra
Terje Kristiansen

The rose is intertwined with black elderberry.Prob

26-05-2025 19:11

lasiobolus?
Edmond POINTE Edmond POINTE

Bonjour, apothécie poilue, jaune pale 495µm poil

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Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
Perz Piotr, 07-05-2006 18:10
Hi everybody

I can't found drawnings oder Pictures of Pyrenopeziza arctii. With B.Declerq key from Zotto's DVD this IS Pyrenopeziza arctii.

Has P.arctii spores with one end pointed und the secont round?

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Perz Piotr, 07-05-2006 18:10
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Perz Piotr, 07-05-2006 18:10
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Perz Piotr, 07-05-2006 18:10
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:11
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Perz Piotr, 07-05-2006 18:12
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Perz Piotr, 07-05-2006 18:12
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Perz Piotr, 07-05-2006 18:12
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Perz Piotr, 07-05-2006 18:12
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Perz Piotr, 07-05-2006 18:12
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
drawnings
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
ectal excipulum
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
hairs
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
hymenium
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
margin 2
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Perz Piotr, 07-05-2006 18:13
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
margin 3
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Perz Piotr, 07-05-2006 18:14
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
spores
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Perz Piotr, 07-05-2006 18:19
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
This is my Found from 2006/ may /02 on Arctium spec. First i thinked this is Mollisia, then Pirottaea brevipila or Belonopsis asteroma. But Belonopsis asteroma growns on Carex and spores by Pirottaea brevipila does NOT hane on end round (Photos by Garcia on Zotto's DVD).

I am sure, everyone here does have experience with Pyrenopeziza arctii and can help me with maximal sure.

greetings from Poland

Pimpek
Jacques Trimbach, 07-05-2006 19:05
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
Les spores et le reste correspondent assez bien. Cf.Ellis & Ellis 1985, Microfungi on Land Plants et Dennis, British Ascomycetes.
Jacques Trimbach, 07-05-2006 19:10
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
En plus, les poils noirs sont assez différents et très caracteristiques chez les Pirottaea.
Perz Piotr, 07-05-2006 20:01
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
Hi Jacques

This means it IS P.arctii! Thanx !!

Very nice Asco :)

Pimpek
NC NC, 08-05-2006 00:12
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
Hi Piotr,

hereby a drawing of P. arctii in case there would be still some hesitation.

Best regards,

Bernard Declercq
Perz Piotr, 08-05-2006 00:30
Re:Is this Pyrenopeziza arctii (W. Phillips) Nannf. (1932) ?
Hi Bernard,

Thanx. On yours drawnings i can not see so long brown hairs and black ?cystals ?gel on margo. So you agree with me, that there is P.arctii?

Best,
Pimpek

ps.
This is drawning from living species?