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16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

02-08-2022 17:48

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

16-08-2022 15:50

Thomas Læssøe

23-07-2022 20:47

Stefan Jakobsson

I made an abundant collection of some Preussia/Spo

15-08-2022 20:36

Marcus Yeo

While in NE Scotland recently I made a couple of c

05-04-2021 10:56

Sven Heinz Sven Heinz

Hello, does anyone have an idea what that could b

17-02-2016 22:49

Ueli Graf Ueli Graf

Hello, I'm looking for  Donadini J.C.  1981 Le g

14-08-2022 18:08

Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

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Pyrenopeziza ''longipilosa''
Michel Hairaud, 11-06-2015 16:08
Michel Hairaud

Bonjour à tous,

Has someone already met this Pyrenopeziza with unusually long hairs ? 

These apothecia were on a previous year's stem of Cirsium palustre , among Pyrenopeziza carduorum, P. atrata and Unguicullela incarnatina (the tiny white thing scattered among). 

Hairs up to 100 µm and 8 septa assembled into strands at margin

Ascus 40-50 x 5-6 µm, H+, IKI-, PS 20-22; spores 8-10 x 1,8-2 , OCI 0,5

Paraphysis x1,5-2,2. EE T globulosa , wall dark, diam. 8-12 µm.

Could it be a singular form of atrata as the other characters would fit ? I also wonder whether someone has already sent such fungus but I can't trace it (ENrique ?) and feel sorry about it if it is the case.

Merci pour vos avis

Amitiés. Michel

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Hans-Otto Baral, 11-06-2015 17:27
Hans-Otto Baral
Re : Pyrenopeziza ''longipilosa''
Hi Michel
I think I see a positive IKI reaction there.

I assume you know my folder
Rumex - Cirsium hairy

There you said IKI intense blue. There are several samples on Rumex but one on Cirsium.
Michel Hairaud, 11-06-2015 22:57
Michel Hairaud
Re : Pyrenopeziza ''longipilosa''

Many thanks once again, Zotto.

In your file there is a collection of mine on Rumex in La Moleson (Switzerland) in July 2012 which seems close  but for the larger spores 10,5-14 x 2-3 (versus 8-10 x 1,8-2 on Cirsium ) and larger ascus and wider paraphyses. The same type of hairs. 

I can see Nicolas had such a collection too.

Amitiés. Michel

Hans-Otto Baral, 11-06-2015 23:14
Hans-Otto Baral
Re : Pyrenopeziza ''longipilosa''
yes, and spores also larger: 10-13 (14) x (2) 2.3-3 µm.

That on Cirsium by Björn Wergen hat spores small: 8,5-10x1,3-1,6µm

And one on Cardamine also by him again 6.7-9.8 x 1.5-2.1
So i should make a separate Rumex folder