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Closteriopsis
longissima
v. tropica

This sample came from a pond near Fredrick, MD. The needle-like cells are usually solitary and found in ponds, lakes, and occasionally in estuarine waters. They measure 6-7.5µ diameter and 225-370µ long. This species does not end in a fine point, but has more blunt tips. The numerous smaller cells are Chroococcus dispersus, which is a member of the Cyanophyta division, more commonly called blue-green algae.

Chlorophyceae