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24-03-2019 00:18

Joop van der Lee

Found on horse dung,Again I found apothecia (2) th

21-03-2019 11:32

Michel RIMBAUD

Bonjour,Récolté il y a quelques jours sur bois p

23-03-2019 23:36

Joop van der Lee

I am looking for the following documenttion.Chalaz

23-03-2019 20:26

Michel Delpont Michel Delpont

Bonsoir! Je suis à la recherche de cet article:

22-03-2019 16:28

Stefan Blaser

Hello everybody, I'm really at a loss with this o

22-03-2019 23:06

Joop van der Lee

Found on deer dung.Ascomata: yellow with setae gro

22-03-2019 21:41

Joop van der Lee

Found on deer dung during examination of another s

23-03-2019 16:06

Peter Thompson

Hello Everyone,I have found perithecia of a black

21-03-2019 01:15

Valencia Lopez Francisco Javier

Hola amigosAdjunto fotos macro/micro de unos Ascob

22-03-2019 13:37

Castillo Joseba Castillo Joseba

Me mandan la muestra seca de Galicia,  recolectad

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Unknown Preussia
Joop van der Lee, 13-03-2019 17:34
Found on deer dung.

Pseudothecia: globose.

Asci: 8-spored; 95-121.5x9.6-11.8 um with a very long stalk.

Spores: Polyseriate; transversal to oblique septa; 20.6-22.4x2.6-3.9 um; no germ slits observed.

Paraphyses: 1.9-2.0 um; septated
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Norbert Heine, 13-03-2019 18:42
Norbert Heine
Re : Unknown Preussia
Hello Joop,

it looks much like Preussia terricola, but therefore your measurements seems not correct, they are too small!

Same problem I've seen in your question to Coprotus spec. Look here.


Maybe Coprotus trichosurus, but your measurements are also much too small.

Please check your details!

Regards, Norbert
Joop van der Lee, 14-03-2019 20:40
Re : Unknown Preussia
Hello Norbert,

To be certain I checked the calibration of my camera with the microscope and it appeared to be off. So thanks for the information that measurements were incorrect.
So here is the new information about the species in my opinion it is P. funiculata mainly because of the obliquely septated spore cells and the lack of hairs as with P. terricola.

Documentation used: Studies of coprophilous ascomycetes VII. Preussia
R.F. Cain Can. J. Bot. 39 (1961) 1636-1638

Ascocarps: 378 um

Asci: 8-spored; 110.8-172.5x16.0-19.4 um with a very long stalk.

Spores: Polyseriate; 4-celled; 29.7-34.2x5.0-6.1 um; obliquely septated; deeply constricted.

Paraphyses: septated with cilindrical and swollen cells.
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Norbert Heine, 14-03-2019 20:49
Norbert Heine
Re : Unknown Preussia
I agree with Preussia funiculata, Joop!

Now the measurements seems to be right;-)

Norbert
Joop van der Lee, 14-03-2019 22:08
Re : Unknown Preussia
Thanks for the advice about the measurements but I  am not sure about the Coprotus.

Joop
Michel Delpont, 15-03-2019 08:33
Michel Delpont
Re : Unknown Preussia
Hello Joop.

Maybe your measuring micrometer is a little low in the data, you should try recalibrating it!

Michel.