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16-08-2022 20:07

Literature request
Bernard Declercq Bernard Declercq

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

07-01-2014 23:04

A bright colour Alpine Helotiale
Michel Hairaud Michel Hairaud

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

10-08-2022 15:45

Scutellinia with bare margin
Pierre-Yves Julien

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

02-08-2022 17:48

Ombrophila(?) - ascospores with great oil content
Pierre-Yves Julien

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

16-08-2022 15:50

ceratostomelloid on hardwood (Fraxinus?) with smoky brown, allantoid spores - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10283169

23-07-2022 20:47

Preussia/Sporormiella on grouse dung
Stefan Jakobsson

I made an abundant collection of some Preussia/Spo

15-08-2022 20:36

Gnomoniaceae on Betula leaves
Marcus Yeo

While in NE Scotland recently I made a couple of c

05-04-2021 10:56

on Urtica dioica
Sven Heinz Sven Heinz

Hello, does anyone have an idea what that could b

17-02-2016 22:49

Literatur Donadini J.C.
Ueli Graf Ueli Graf

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

14-08-2022 18:08

Tatraea dumbirensis look-alike
Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

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On bark
Enrique Rubio, 04-01-2021 21:40
Enrique RubioI need your help with this pyreno with small (o.2-0.3 mm)pyriform, caespitose, ostiolate, papillate, not setose, blackish, pseudothecia on a branch of harwood still attached to the tree. It has paraphysate ascomata KOH-negative, with bitunicate asci and the ascospores (hyaline or very pale pinkish), with no sheaths,have several transverse septa. 
Maybe a Pseudotrichia species?
Many thanks in advance.
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Paul Cannon, 05-01-2021 12:22
Re : On bark
Hello Enrique

Do the perithecia collapse when dry? This is somewhere in the Tubeufiaceae, I think; it more or less matches Thaxteriella pezizula apart from the lack of a subiculum (conidiophores). I dug around a little in the family but couldn't find a clear match. Keep on searching...

Best wishes

Paul
Enrique Rubio, 05-01-2021 16:51
Enrique Rubio
Re : On bark
Dear Paul
Thank you for your replay.
In fact, as you expected, the ascomata collapse vertically when they dry out. But I haven't been able to see any remains of any hypomycete under them.
However your proposal of Tubeufiacieae seems correct and so I have been consulting even Thaxteriella could be a good genus.
Enrique

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