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19-08-2022 22:26

Juuso Äikäs

A few years ago I found a group of olive-brown fru

19-08-2022 19:05

Stefan Jakobsson

On a petiole of a leaf of what seems to be Populus

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

18-08-2022 17:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283042

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 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

16-08-2022 15:50

Thomas Læssøe

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

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Pyreno on Fagus leaves
Enrique Rubio, 21-04-2015 18:18
Enrique Rubio

Hi to everybody


This enigmatic pyreno on Fagus sylvatica old leaves at the sea level (I never seen it at the montaneous level where Fagus is very common in my country) forms blackish, scattered conical, ostiolate perithecia 0.3-0.5 mm in diam. on bleached patches with irregular margins at both sides of the leaf.


The globose to pyriform perithecium is covered by a clypeate structure with an epidermoid texture. Asci narrowly fusiform up to 175 x 4 with a n small refringent apical apparatus only well visible in IKI (IKI negative) or cotton blue. Scolescospores filiform, hyaline, spirally disposed inside the asci, for exemple 150 x 1.


I don't know a good genus for my fungus. Can you help me?


Thanks in advance

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Alain GARDIENNET, 21-04-2015 19:26
Alain GARDIENNET
Re : Pyreno on Fagus leaves

Hi Enrique,


 Somewhere in Diaporthales... Perhaps around Linospora ?


Good luck !


Alain

Enrique Rubio, 21-04-2015 19:34
Enrique Rubio
Re : Pyreno on Fagus leaves

Hi Alain


I have considered Linospora but in this genus  the ostiole is lateral and no central (as mine) and the peridium is said to be built by a textura prismatica not epidermoidea.


Do you think theses asci are typical for Diaporthales?


Thanks a lot, Alain

Alain GARDIENNET, 21-04-2015 22:14
Alain GARDIENNET
Re : Pyreno on Fagus leaves

A species from Diaporthales ? I don't know.  even if textura epidermoidea, apical apparatus, habit are ok, It was just an idea to open a talk.


It's unknwon for me.


Alain


 

Enrique Rubio, 22-04-2015 12:08
Enrique Rubio
Re : Pyreno on Fagus leaves

Thanks Alain


It is curious all the leaves of these Fagus in a Botanical Garden are 'infected' by this enigmatic fungus that I never seen at the montaneous Fagus forest...