Goodnight upload photos Cosmarium between the genus Desmidiaceae, the last picture is a negative.
Regards, Francisco.
(https://www.mikroskopie-forum.de/pictures004/164806_10589941.jpg) (http://s1373.photobucket.com/user/catetocateto/media/1_1_zpsva8rpq2u.jpg.html)
(https://www.mikroskopie-forum.de/pictures004/164806_31534420.jpg) (http://s1373.photobucket.com/user/catetocateto/media/2_zpsjhgm8te2.jpg.html)
(https://www.mikroskopie-forum.de/pictures004/164806_17842833.jpg) (http://s1373.photobucket.com/user/catetocateto/media/1_zpsqc2dy3u7.jpg.html)
Dear Francisco,
your Objekt is Cosmarium obtusatum.
Best wishes
Rupert Lenzenweger
Oh, thank you very much Rupert Lenzenweger for clarification of the species.
Regards, Francisco.