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25-06-2019 13:46

Edvin Johannesen Edvin Johannesen

Hei, These apothecia are apparently growing on de

25-06-2019 21:23

Ethan Crenson

A couple of days ago I found these long-necked, pa

25-06-2019 09:45

Miguel Ãngel Ribes Miguel Ángel Ribes

Good morningOn 3/6/2019 we find at Tenerife (Canar

25-06-2019 17:23

Castillo Joseba Castillo Joseba

de ayer en madera de  haya  ...    A ver se 

24-06-2019 12:01

Blasco Rafael Blasco Rafael

Hola, les presento otro hongo imperfecto, para ver

25-06-2019 13:46

Edvin Johannesen Edvin Johannesen

Hei, These apothecia are apparently growing on de

25-06-2019 07:55

Blasco Rafael Blasco Rafael

Hola, alguno de ustedes dispone de este articulo ?

19-06-2019 19:55

Andgelo Mombert

Bonsoir, Apothécies jusqu'à 1,5 mm de diamètre

19-06-2019 19:45

Andgelo Mombert

Bonsoir, Sur tige morte d'ombellifère, peut-êtr

20-06-2019 08:31

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.Here is a tiny fungus growing on rotten bark

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Black Asco Embedded in Leaf of Carex riparia
Peter Thompson, 23-03-2019 16:06
Hello Everyone,

I have found perithecia of a black ascomycete embedded just under the epidermis of a dead leaf of Carex riparia. The fruit bodies seem to be growing individually and spaced out along the two edges of the leaf. They measure approximately 0.3 mm diameter.

The spores are brownish green, 1-septate and slightly constricted at the septum. Each cell contains large and small guttules. The spore dimensions range from 19.5 to 25 x 6 - 7 um and there is a hyaline, sharply pointed appendage at each end, each measuring 7 um. The spores and their appendages seem to mostly be slightly curved.

The 8-spored asci seem to radiate from a central area. Spores are arranged in one or two rows inside and lugol distinctly blues the ascus tip. 

I have attached images of the fruit bodies in situ, spores, asci and excipulum.

I wonder if anyone has any ideas as to what this might be?

Thank You,
With Best Wishes,
Peter.
  • message #56944
  • message #56944
  • message #56944
  • message #56944
Alain GARDIENNET, 23-03-2019 21:14
Alain GARDIENNET
Re : Black Asco Embedded in Leaf of Carex riparia

Hi Peter,


Compare to Ceriophora palustris please.


Alain

Alain GARDIENNET, 23-03-2019 21:16
Alain GARDIENNET
Re : Black Asco Embedded in Leaf of Carex riparia

If you have a lot of material, I would be happy to look at it.


Alain

Peter Thompson, 23-03-2019 21:29
Re : Black Asco Embedded in Leaf of Carex riparia
Hello Alain,

Thanks for your reply.

I considered Ceriophora palustris, as the closest species in Ellis & Ellis, growing on Carex, but it is not correct. E.g. my sample has 7 um long, tapering and pointed appendages on the ends of the spores, not the shorter, rounded appendages of C. palustris.

I have at least 30 more fruit bodies. If you would like to email your address to me, I will be pleased to post the sample to you.

With Best Wishes,
Peter.
Alain GARDIENNET, 24-03-2019 17:41
Alain GARDIENNET
Re : Black Asco Embedded in Leaf of Carex riparia

14 rue roulette


21260 VERONNES


France


 


Thanks,


Alain

Peter Thompson, 26-03-2019 23:10
Re : Black Asco Embedded in Leaf of Carex riparia
Hello Alain,

Thanks for providing your address.

The sample will be posted to you tomorrow morning.

With Best Wishes,
Peter.