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18-05-2019 21:17

Django Grootmyers

Hello, I have been having trouble identifying this

22-05-2019 18:10

Thomas Læssøe

I have encountered scanty materiale of a tiny (!)

21-05-2019 18:13

Blasco Rafael Blasco Rafael

Hola, alguna idea de que genero mirar, me recuerda

20-05-2019 22:07

Ethan Crenson

In New York City on what I believe are raccoon dro

22-05-2019 16:05

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together on saturday we found also this Mol

22-05-2019 19:05

Roger Melo Roger Melo

It looks like a composite apothecia on wood of an

21-05-2019 21:41

Eike- Milorad Heinemann Eike- Milorad Heinemann

Hello together on saturday we found this Pyrenope

22-05-2019 11:10

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Auriez-vous une idée su

21-05-2019 22:25

Ron Bronckers

Hi everybody,Maybe someone can help me to obtain a

21-05-2019 11:21

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  recolectado

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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.