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16-06-2019 19:17


On dead stem of Veratrum, numerous dot-like specim

16-06-2019 11:54


Hello.Here is a Hymenoscyphus species growing on b

16-06-2019 12:07

Riet van Oosten Riet van Oosten

Hello, Found by Theo Westra, 13-06-2019 (The Neth

14-06-2019 15:32

Malcolm  Greaves Malcolm Greaves

A small group of Perithecia on rotten (salix?) woo

14-06-2019 09:40

Per Marstad Per Marstad

I have found this in Norway, on hardwood, laying o

14-06-2019 06:40

Django Grootmyers

What is this parasite of Cantharellus minor? Found

11-06-2019 01:49

Valencia Lopez Francisco Javier

Hola amigos...Adjunto fotos de unas supuestas Para

11-06-2019 00:32

Elisabeth Stöckli

Bonsoir, Sur feuilles de ronce (Rubus/roncier à

11-06-2019 16:20

Garcia Susana

Hola, He recolectado este asco sobre estiercol, c

12-06-2019 22:42

Ethan Crenson

Hello all, A friend noticed these tiny fruiting b

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Niesslia exosporioides? => Niesslia typhae
Riet van Oosten, 04-05-2019 22:16
Riet van Oosten

Found by Willy Heimeriks on 27-04-2019, The Netherlands, on Typha latifolia.

Could this be Niesslia exosporioides?

Asci: 8-spored

Sporesize: 10.9-10.9-11.7 x 1.7-1.9-1.9 µm

I see there is also a Niesslia typhae (Fig. 14)

Greetings, Riet
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Peter Thompson, 04-05-2019 22:36
Re : Niesslia exosporioides?
Hello Riet,

I notice your link to my forum posting for a sample of a Niesslia sp., which I found growing on Typha latifolia in the United Kingdom.

I posted my sample to Walter Gams so that he could study it and he concluded that it was almost certainly a species of Niesslia new to science. During email correspondence with Walter Gams, I did agree a provisional Niesslia typhae spec. nov. with him.

Unfortunately, he was never able to work on describing this sample, due to lack of a budget for work on this genus.

Regrettably, he is no longer alive.

Unless anyone else is able to create a species description for this taxon, it will remain undescribed.

With Best Wishes,
Peter Thompson.
Riet van Oosten, 04-05-2019 22:46
Riet van Oosten
Re : Niesslia exosporioides?
Hello Peter,
Thank you for your information!
Best wishes,
Chris Yeates, 05-05-2019 23:05
Chris Yeates
Re : Niesslia exosporioides? => Niesslia spec.
Niesslia typhae does appear to have been validly published:

If Peter has not been informed of this - or been sent a copy of the relevant publication - Mycological Progress 18(1-2):5-76 that seems a bit direspectful.

Perhaps if he contacts the publishers they would be able to correct this oversight.
Riet van Oosten, 06-05-2019 13:17
Riet van Oosten
Re : Niesslia exosporioides? => Niesslia spec.
Indeed not very respectful .... 
Thank you for your information Chris!

So the Dutch find could be Niesslia typhae? 
Peter Thompson, 06-05-2019 20:55
Re : Niesslia exosporioides? => Niesslia spec.
Hello Riet and Chris,

I had no idea that the late Walter Gams' outstanding work on Niesslia had been completed and published earlier this year.

If it is believed that I am entitled to receive a copy of the publication, I shall investigate. 

Riet - Once a copy of this document published by Springer becomes available, it will then be possible to compare your material with the information published. 

Chris - Thanks for looking into this. I notice that Niesslia typhae is a blue entry in Index Fungorum. I wonder if work is complete on its creation as a new taxon?

Thank You,
With Best Wishes,

Riet van Oosten, 06-05-2019 21:06
Riet van Oosten
Re : Niesslia exosporioides? => Niesslia spec.
Thank you very much for all your help Peter en Chris!
With best wishes,
Martin Bemmann, 06-05-2019 21:25
Martin Bemmann
Re : Niesslia exosporioides? => Niesslia spec.
Dear Peter,

This paper was published posthumously. Walter Gams passed away almost two years before. I think, to inform you was simply forgotten by the co-authors who finished the publication. I will send you a copy of this paper.

Best regards

Peter Thompson, 06-05-2019 21:36
Re : Niesslia exosporioides? => Niesslia spec.
Dear Martin,

I have received your email and the attached document about the new Niesslia species.

Thank you very much for your help with this.

With Best Wishes,