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Zygnema (Charophyceae)

Zygnema sp. from a lake in NH USA
Typical cells with two stellate (star-shaped) chloroplasts

Zygnema sp. from a lake in NH USA

Zygnema sp. from a lake in NH USA

Zygnema sp. from a lake in NH USA
Recently divided cells

Zygnema sp. from a lake in NH USA

Zygnema sp. from a lake in NH USA

Zygnema sp. from a lake in NH USA

Zygnema sp. from a lake in NH USA
Recently divided cells

Zygnema sp. from a lake in NH USA
Filaments x200

Zygnema sp. from a lake in NH USA
Trichomes x100

Zygnema sp. from a lake in NH USA
Scalariform ("ladder") conjugation

Zygnema sp. from a lake in NH USA
Same (lower magnification)

Zygnema sp.
Photo by Ann St. Amand (PhycoTech) posted online

Zygnema sp. with zygotes formed in 'female' (receiving) trichome.
Photograph is posted online.

from the pond Hegne Moor situated in the vicinity of Lake Constance.

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