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14-02-2015 14:21

hannie wijers

Hella, I have another question.On a branch of har

13-02-2015 21:38

Malcolm  Greaves Malcolm Greaves

I came across this growing on and around some Podo

14-02-2015 21:00

Jenny Seawright Jenny Seawright

Hello all, This Coprotus appeared on rabbit dung a

15-02-2015 10:09

Leandro Sánchez Leandro Sánchez

Sur Quercus, diamètre max 7 mmCordialement

15-02-2015 11:52

Vasileios Kaounas Vasileios Kaounas

Found 114-02-15, in rotten pine nuts of Pinus hale

14-02-2015 13:39

hannie wijers

Hello, On a branch of hardwood (which is unknown,

12-02-2015 14:58

Björn Wergen Björn Wergen

Hi friends,I am looking for this one:Kutorga E, Ha

13-02-2015 15:33

Pavol Palo

Hello, dear friends.Thank you in advance for your

13-02-2015 14:40

Mario Filippa

January 6, 2015. On decorticated wood of Alnus glu

12-02-2015 19:56

Godorova Olga Godorova Olga

Hello, dear friends.Two days ago we were in Negev

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Preussia terricola
Joop van der Lee, 13-03-2019 17:34
Joop van der LeeFound 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
Joop van der Lee
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
Joop van der Lee
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.