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Mougeotia (Charophyceae)

Mougeotia sp. from a lake in NH USA
Chloroplast in one cell has rotated 90 degrees to minimize exposure to sunlight. Sometimes a chloroplast gets twisted when one end turns in one direction, and the other end turns in the opposite direction!

Mougeotia sp. from a lake in NH USA
Biconcave "replicate" end wall is evident

Mougeotia sp. from a lake in NH USA
Sheath (~ 3x cell diameter) is evident

Mougeotia parvula with two zygotes formed in scalariform bridges between parent trichomes
Photograph posted online

Mougeotia sp. from a wetland at the Pillersee (Tyrol, Austria) with zygotes formed in scalariform bridges between parent trichomes. Photograph by ' woelfib' posted online

Mougeotia sp.
Photograph from Protist Server posted online

Mougeotia sp. with a twisted chloroplast (when avoiding sunlight chloroplasts turn sideways;  in this case one end didn't know which direction the other end was turning!).
Photograph by Jason Oyadomari of Keweenaw MI USA algae

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