zygnematales:

preview-picture	description	comment
	actinotaenium cucurbita Elfenmeer, a heathland pond April 2003
	arthrodesmus octocornis pond near the Wupper dam May 2006
	closterium acerosum garden pond, December 2002
	closterium gracile Elfenmeer, a heathland pond Juni 2005
	Closterium rostratum Alatsee, Austria, October 2006
	closterium leibleinii botanical garden university Duesseldorf, spring 2001
	closterium moniliferum garden pond between spaghnum January 2007
	closterium spec. heathland pond, January 2022	In the terminal vacuoles of Closterium spec. you will find gypsum crystals that are showing a dance due to the Brownian motion.
	Closterium spec. Terminal vacuoles with gypsum crystalsr; heathland pond, January 2022
	closterium navicula botanical garden university Duesseldorf, spring 2001
	closterium parvulum garden pond, February 2007
	closterium pronum Emscherpark June 2004	closterium pronum is very long, but only a few µm wide. The picture is composed of two different one. Now one can see the wholge algae at e relative high magnification.
	closterium garden pond May 2005	end of vegetative cell-division
	cygote of closterium striolatum. Cologne Wahn moor April 2006	10 pictures stacked withCombineZ5
	cosmarium botrytis botanical garden university Duesseldorf, May 2005
	cosmarium botrytis national horticultural show Duesseldorf, April 2006	early state of cell division that starts with a prolongation of the isthmus and its following line out in the middle.
	cosmarium caelatum Col de la Schlucht, Alsace, water-trickled rock August 2005
	cosmarium holmiense var. hibernicum Schee Tunnel, water-trickled rock January 2007
	cosmarium impressulum national horticultural show Duesseldorf, September 2006
	cosmarium portianum Cologne-Wahn moor July 2004
	Cosmarium reniforme Heathland pond June 2015	Oblique illumination
	Cosmarium reniforme Heathland pond June 2015	Red chlorophyll autofluorescence
	Cosmarium reniforme Heathland pond June 2015	Polarized light with lambda-retarder
	cosmarium subcostatum var.minus national horticultural show Duesseldorf, May 2003
	cosmarium subcucumis garden pond between spaghnum January 2007
	cosmarium subcucumis garden pond between spaghnum January 2007	affection with bacteria, beginning corruption
	cosmarium subcucumis garden pond between spaghnum January 2007	abnormality during the vegetative reproduction
	cosmarium tetraophthalmus Cologne-Wahn moor May 2002
	cosmarium tetraophtalmus botanical garden university Duesseldorf, spring 2001	Film, AVI-Format, 1,4 MB
	cosmarium vexatum garden pond between spaghnum January 2007
	cylindrocystis brebissonii Lac de Lispach, Alsace August 2005
	desmidium swartzii Cologne-Wahn moor December 2006
	desmidium swartzii Cologne-Wahn moor December 2006	6 pictures stacked with CombineZ5
	Euastrum ansatum var. pyxidatum DELP Elfenmeer, a heathland pond April 2008
	euastrum bidentatum Cologne-Wahn moor August 2002
	Euastrum humerosum Elfenmeer November 2014	Bright field
	Euastrum humerosum Elfenmeer November 2014	Dark field
	Euastrum humerosum Elfenmeer November 2014	Chlrophyll autofluorescence
	Euastrum humerosum Elfenmeer June 2008	Anomaly of twin-headed individuals
	Euastrum humerosum Elfenmeer June 2008	Anomaly of twin-headed individuals
	Euastrum humerosum Elfenmeer June 2008	Reduced growing
	euastrum humerosum, var. affine Elfenmeer, a heathland pond June 2005
	Euastrum insulare Hilden heathland, between sphagnum August 2007
	Euastrum oblongum Elfenmeer, a heathland pond April 2008
	eurastrum oblongum; cygote Cologne-Wahn moor spring 2001
	Euastrum verrucosum Elfenmeer, a heathland pond near Roermond Aril 2008	Stack of 6 pictures
	Euastrum verrucosum Elfenmeer, a heathland pond near Roermond Aril 2008	Focus on surface
	Gymnozyga (Bambusina) spec. Galgenvenn March 2013	Brightfield and Chlorophyll autofluorescence in 365 nm UV-excitation
	Hyalotheka dissilens Elmpter Schwalmbruch January 2022	Darkfield
	Hyalotheka dissilens Elmpter Schwalmbruch January 2022	gelatinous sheath
	Hyalotheka dissilens Elmpter Schwalmbruch January 2022	gelatinous sheath in phase contrast technique
	Hyalotheka dissilens Elmpter Schwalmbruch January 2022	gelatinous sheath
	mesotaenium spec. atmophytic in a gelantin between mosses, garden January 2007
	mesotaenium spec. atmophytic in a gelantin between mosses, garden January 2007	the layered gelantin is visible with phase contrast
	micrasterias americana Schwalm-Nette area, white stone December 2006	2 pictures stacked with CombineZ5
	micrasterias americana Cologne-Wahn moor May 2003 und 2004	2 different individuals, left in flat-position, right side-face view
	Micrasterias brachyptera Seethaler lake near Tamsweg, Austria September 2007
	Micrasterias denticulata Elmpter Schwalmbruch August 2008
	Micrasterias denticulata Birgelen, virgin forest April 2013
	Micrasterias papillifera Elfenmeer, a heathland pond April 2008
	Micrasterias papillifera Elfenmeer, a heathland pond April 2008	In phasecontrast also the gelantine shell is visible. This gelantine enables the algae to move around a bit.
	Micrasterias rotata Schwalm-Nette aerea, white stone April 2008
	Micrasterias rotata Gardenpond September 2016
	Micrasterias rotata Schwalm-Nette aerea, white stone April 2008	Darkfield
	Micrasterias rotata Schwalm-Nette Gebiet April 2016	Chlorophyll Autofluorescence, excitation Royal Blue LED.
	Micrastrerias thomasiana var. notata Rolvennen, a heathland pond May 2007
	Micrastrerias thomasiana var. notata Rolvennen, a heathland pond May 2007	Dark field
	Micrasterias truncata Galgenvenn, a heathland pond September 2009
	Micrasterias truncata Elmpter Schwalmbruch September 2018	Polarizrd light with lamda retarder
	Micrasterias truncata Galgenvenn, a heathland pond March 2013	Chlorophyll Autofluorescence, excitation with 365 nm Nichia LED
	Micrasterias truncata var. semiradiata Rolvennen, a heathland pond April 2008
	Mougeotia scalaris Cologne-Wahn moor, March 2002	in conjugation
	Netrium digitus Heathland pond, June 2015
	netrium interruptum var. minor Lac de Lispach, Alsace August 2005
	penium spirostriolatum Emscherpark, August 2002
	Pleurotaenium ehrenbergii Elfenmeer May 2008
	Pleurotaenium ehrenbergii garden pond May 2015	Dunkelfeld
	Pleurotaenium ehrenbergii garden pond May 2015	Polarisiertes Licht
	Pleurotaenium ehrenbergii garden pond May 2015	Vacuole with crystals, Brownian motion
	spirogyra spec. garden pond February 2007	Cell with nucleus in the middle
	Spirogyra spec. stome pit near kerpen April 2007	early phase of conjugation
	Spirogyra spec. stome pit near kerpen April 2007	early phase of conjugation
	spirogyra spec. Urdenbach floodland May 2004	formation of cygotes
	Spirogyra spec. Garden pond April 2019	Red Chlorophyll Fluorescence
	Spirogyra spec. Garden pond April 2019	Bright field foto of above red chlorophyll fluorescence
	Spirogyra spec. Garden pond August 2020	Transmitted light, nucleus and chlorophyllribbon
	Spirogyra spec. Garden pond August 2020	Dark field, chlorophyllribbon
	Spirogyra spec. Garden pond August 2020	Crossed nicols, birefringent cellwalls, chlorophyllribbon
	Spirogyra spec. Garden pond August 2020	Transmitted light, nucleus and chlorophyllribbon with pyrenoides
	spirotaenia condensata Lac de Lispach, Alsace August 2005
	spondylosium pulchellum Elfenmeer, a heathland pond June 2005
	staurastrum dejectum Elfenmeer, a heathland pond April 2003
	staurastrum spec. Lac de Vologne, Alsace August 2005
	Staurastrum brachiatum RALFS Lake near Ünterlüß July 2008	Each half with 3 spiky forked appendices, mostly only 2 visibale at the same time
	Staurastrum brachiatum RALFS Lake near Ünterlüß July 2008	With phasencontrast the strong gelantine shell becomes visible
	Staurastrum brachiatum RALFS Lake near Ünterlüß July 2008	Focus on the spiky forked appendices
	staurastrum crenulatum pond near the Wupper dam Mai 2006
	Staurastrum furcatum Elfenmeer, a heathland pond August 2008	Anomalie during cell division
	staurastrum manfeldtii Emscherpark June 2004
	staurastrum manfeldtii Emscherpark June 2004
	staurastrum margaritaceum Cologne-Wahn moor Mai 2002
	Staurastrum muricatum Pietz Moor July 2008	Wall with concentric rows of small warts
	Staurastrum muricatum Pietz Moor July 2008	Focus on middle of Cell, apex and isthmus
	Staurastrum setigerum (movie, WMV-format, 7.9 MB) Ochsenfilz Allgäu October 2009
	staurastrum spongiosum Cologne-Wahn moor, December 2006	3 pictures stacked with CombineZ5
	Staurastrum teliferum Cologne-Wahn moor April 2006	2 pictures in different focus-layers
	staurastrum tetracerum Grube Weiss, an old clay pit June 2005
	staurodesmus convergens Cologne-Wahn moor, April 2006	Objective 100/1.25, oil, 10 pictures stacked with CombineZ5
	staurodesmus convergens Cologne-Wahn moor April 2006	this algae is surrounded by a weak gelatine
	staurodesmus triangularis Cologne-Wahn moor May 2003
	staurodesmus species pond near the Wupper dam May 2006
	tetmemorus granulatus Cologne-Wahn moor April 2006
	Xanthidium antilopaeum Grundloser See, Lüneburger Heide Juli 2008
	Xanthidium antilopaeum Grundloser See, Lüneburger Heide Juli 2008
	zygnema Emscherpark, August 2002
	zygnema leiospermum Cologne-Wahn moor, July 2004	sexual reproduction