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Cylindrospermum (Cyanophyceae)

Cylindrospermum sp.
Modified from image by Ralf Wagner

Cylindrospermum sp.
Clusters of trichomes attached to substrate.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Clusters of trichomes attached to substrate.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH USA

Cylindrospermum stagnale
Geitler's description fits these individuals, although they lack subterminal akinetes (spores), perhaps because of the enriched habitat, a detention pond. Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum stagnale
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Cells lack gas vesicles, but contain granulation that may include polyphosphate and starch granules.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Terminal heterocyst appears to have attached bacteria that are absent from outer surface of the vegetative cells.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Lower magnification shows terminal heterocyst on one end of the trichocysts.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Lower magnification shows terminal heterocyst on one end of the trichocysts.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp.
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Salmon Falls River Reservoir, Milton Mills, NH USA 9 August 2010
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Barbadoes Sand Pit, Dover/Madbury, NH USA 21 August 2012
Collected by Prof. Jim Haney, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Barbadoes Sand Pit, Dover/Madbury, NH USA 21 August 2012
Collected by Prof. Jim Haney, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp, Barbadoes Sand Pit, Dover/Madbury, NH USA 21 August 2012
Collected by Prof. Jim Haney, University of New Hampshire, Durham, NH 03824 USA

Cylindrospermum sp. from Japan
Photograph by 'Neko No Shippo' posted online

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