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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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On Pteridium
Enrique Rubio, 25-04-2020 18:46
Enrique RubioHi to everyone
I would like to know your opinion about these completely superficial and ostiolate perithecia covered by a clypeoid structure that grew isolated on Pteridium aquilinum rachis. The gregarious hemispheric or broadly conical ascomata measure 150-200 microns in diameter, the asci have a sharply cut base and a small Melzer negative apical apparatus and contain eight hyaline, narrowly ellipsoid, mostly 3 septate ascospores. The paraphyses are abundant, some of them capitulate.
With these data I pressume that it could be a fungus in the order Diaporthales, but I do not get any concrete results.
Any help would be welcome

Many thanks again. 

  • message #62898
  • message #62898
  • message #62898
  • message #62898
Paul Cannon, 26-04-2020 16:13
Re : On Pteridium
Hello Enrique

I think you have a species of Porina. Using a key to British species it seems close to P. aenea which is usually a bark-inhabiting species, but it would not surprise me particularly to find it growing on other substrata; it's been reported on Rubus stems, for example. The lichen thallus is reduced here, but the orange patches on your macro image look as if they are Trentepohlia which is the right alga for European species. There are lots of tropical species on leaves.

Best wishes

Paul
Enrique Rubio, 26-04-2020 17:36
Enrique Rubio
Re : On Pteridium
Dear Paul
I've seen your pictures in Fungi and Lichens of Great Britain and Ireland and I see that they match very well with my collection. I find it very difficult to know many times if a fungus is lichenized.
Many thanks again for your kindly help.
Best wishes
Enrique
Alain GARDIENNET, 27-04-2020 21:17
Alain GARDIENNET
Re : On Pteridium

Hi Enrique,


I completely agree with Paul. Porina genus was my first idea. Concerning P. aena, I found it on Ruscus, Buxus, Ligustrum, Rubus, Lonicera. Why not on Pteridium. I'm not so surprised.


Alain

Enrique Rubio, 27-04-2020 21:31
Enrique Rubio
Re : On Pteridium
Thank you for your contribution, Alain