pyreno with anamorph - Forum ASCOFrance

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pyreno with anamorph

Aafke Buijs, 01-05-2017 22:50

Dear forum,

On hard wood I found this pyrenomycete with anamorph (second picture).
At first thought of an Amphisphaeria-species but those have coloured spores as far as I know.
Perithecia partly immersed, with short necks as small dots on the upper part; spores two- sometimes three-celled, hyaline, smooth, 17.5 - 23; asci eight-spored, uni-/biseriate, about 125 - 135, ascus-tip not reacting in J.

Kind regards,

Aafke

Gernot Friebes, 01-05-2017 22:58

Re : pyreno with anamorph

Hi Aafke,

could the substrate be Tilia? Your fungus reminds me of Hercospora tiliae.

Best wishes,
Gernot

Aafke Buijs, 01-05-2017 23:13

Re : pyreno with anamorph

Hi Gernot,

I enclose a picture of the bark, with a typical structure, perhaps you recognize it ...
I don't really know if it was on Tilia.
In water the spores measured up tot 23 microm. Does this fit within the description, Dennis mentions spores 15-18 ?

Aafke

Gernot Friebes, 02-05-2017 10:30

Re : pyreno with anamorph

Hi Aafke,

I think the second photo in your initial post looks quite similar to Tilia (notice the relatively thick bast).

Here Enrique Rubio shows a collection of H. tiliae with spores up to 25.8 µm in length so I don't think the spore size of your collection is a concern: https://www.asturnatura.com/fotografia/setas-hongos/hercospora-tiliae-pers-tul-c-tul-2/12658.html

Best wishes,
Gernot

Aafke Buijs, 03-05-2017 08:02

Re : pyreno with anamorph

Hi Gernot,

Then, altogether, my find (with also the anamorph) corresponds quite well to the description of Hercospora tiliae.

Thank you for your response, Gernot !

Greetings,

Aafke

Peter Püwert, 03-05-2017 14:28

Re : pyreno with anamorph

Hi all,
here a collage with the ana- and teleomorphe.
Greetings Peter.

Aafke Buijs, 03-05-2017 23:07

Re : pyreno with anamorph

Nice collage Peter, but confusing too ...
So Hercospora tiliae has a different, non-septate anamorph.
Does this also mean that the name Hercospora tiliae is uncertain for this find ?

Peter Püwert, 04-05-2017 12:51

Re : pyreno with anamorph

Hi Aafke,
the finding is already sure. The spores of the anamorphes are right different. The species is quite frequent here.
Greetings Peter.

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