cyanobacteria, blue-green algae:

preview-picture	description	comment
	anabaena spec. botanical garden, university Duesseldorf August 2006	The picture shows an anabaena spec. with cells in different cell-division stages. You can see also the somewhat bigger heterocystis in the middle of the filament. Here the nitrogen processing takes place. At the contact points with the "normal" cells there are two light scattering granules visible. These are the so called pole-bodies. Through these the nitrogen-assimilates are transported to all other cells..
	aphanothece spec. garden pond May 2005
	aphanothece spec. Rhine bank near Urdenbach Oktober 2005
	Chamaesiphon spec. Aquariumf February 2008
	Chamaesiphon spec. Aquariumf February 2008
	Chroococcus multicoloratus Mucilaginous film from an old railwaystation wall January 2016
	Chroococcus turgidus gardenpond August 2016
	Coelosphaerium spec. Gardenpond August 2016
	Cylindrospermum garden pond, bank July 2016	At the end of the filament an longish akinet and a round heterocyst
	cylindrospermum spec. garden pond, bank Juni 2005	At the end of the filament an longish akinet and a round heterocysta. The right picture shows the habitus as seen with your eyes.
	gleothece linearis Cologne-Wahn, moor December 2006	Single cells linear arranged in a common gelatin
	Gloeocapsa spec. Slime on a wall at a railwaystation January 2016	Single cells in common gelatin
	Gloeocapsa spec. Slime on a wall at a railwaystation January 2016	Single cells in common gelatin
	Gloeocapsa spec. Slime on a wall at a railwaystation January 2016	Single cells in common gelatin
	Gloeotrichia echinulata Seethaler lake near Tamsweg, Austria September 2007	Overall view
	Gloeotrichia echinulata Seethaler lake near Tamsweg, Austria, Österreich September 2007	Trichomes end in in long, colorless hairs
	Gloeotrichia echinulata Seethaler lake near Tamsweg, Austria, Österreich September 2007
	gomphospaeria aponina botanical garden, university Duesseldorf Dezember 2006
	merismopedia elegans north sea coast, Emden September 2005
	Merismopedia spec Small pond near Hilden June 2012
	Merismopedia spec. Birgelen, virgin forest April 2013	Brightfield and Chlorophyll autofluorescence in 365 nm UV-excitation
	nostoc-(anabaena)-azollae river Erft near Frimmersdorf April 2003	The right picture shows the algae nostoc-(anabaena)-azollae. The pictures to the left show the fern azolla filiculoides. It forms a symbiosis with the cyanobactrium which is living in caves formed by the ferns leaves.
	Nostoc-(Anabaena)-azollae garden pondh April 2007	The symbiontic cyanobacteriume of the fern Azolla filiculoides. Filament with heterocysts, at the contact-dots of the heterocyst we find the light scattering pole-bodies.
	Nostoc-(Anabaena)-azollae garden pond April 2007	The symbiontic cyanobacteriume of the fern Azolla filiculoides in phase contrast.
	Nostoc linckia gardenpond July 2015
	Nostoc linckia Heathland pond near Roermond July 2016
	Nostoc linckia Heathland pond near Roermond July 2016	Chlorophyll Autofluorescence
	nostoc commune wayside of a little park in Benrath August 2004	macrofoto, habitus
	nostoc commune savaged site in Duesseldorf Urdenbach Dezember 2006
	nostoc commune savaged site in Duesseldorf Urdenbach Dezember 2006	same as above, but with phase-contrast
	Oscillatoria spec. Small pond near Hilden June 2012
	Oscillatoria spec. Small pond near Hilden June 2012	Chlorophyll Autofluorescence
	The Schwinde-spring, Lüneburger Heide Juliy 2008	This picture shows the habitat of the folowing 3 pictures. The yellow arrow marks the large, black, macroscopically visible beds of Oscillatoria limosa.
	Oscillatoria limosa Schwinde-spring, Lüneburger Heide July 2008	Filaments are 15 µm width, cellength is 4 µm, filaments are non-bransched and have a small gelantineous shell
	Oscillatoria limosa Schwinde-spring, Lüneburger Heide July 2008	Formation of hormogonias
	Oscillatoria limosa Schwinde-spring, Lüneburger Heide July 2008	The ending-cells are flatly rounded
	scytonema spec. Cologne-Wahn, moor January 2007	The genus Scytonema shows false branchings. This means, that the branch is generated from two independent filaments and not by the cells of a single filament. Furthermore there are three heterocysts visible. Heterocysts are special cells that are able to synthesize organic (nitrogen) compounds from the nitrogen in the air. Also visible is the common mucous borderline.
	scytonema spec. Cologne-Wahn, moor January 2007	early state of branching
	Stichosiphon sansibaricus Aquarium February 2008	Epiphytic species
	Stichosiphon sansibaricus Aquarium February 2008	Epiphytic species
	Stichosiphon sansibaricus Aquarium February 2008	Epiphytic species
	Stichosiphon sansibaricus Aquarium February 2008	Epiphytic species
	Stichosiphon sansibaricus Zoo Krefeld, Tropical center August 2008	Epiphytic on Cladophora
	Stichosiphon sansibaricus Zoo Krefeld, Tropical center August 2008	Epiphytic on Cladophora
	Trichormus catenulus var. affinis Pond near Hilden June 2007
	Trichormus catenulus var. affinis Pond near Hilden June 2007	In phase-contrast the small gelantineous envelope becomes visisble