Flagellates and swimming colonies
Chlamydomonas
Chlamydomonas and similar single green flagellates
Tiny round to oval green cells with two equal flagella, zipping and darting through the field.
What to look for
- One large cup-shaped chloroplast fills most of the cell.
- Two flagella of equal length at the front, used in a breast-stroke.
- Often a red eyespot at the side.
Size in the field
Very small: at 100× just moving green dots; use 400× or more.
Where to find it
Puddles, bird baths, rain barrels, green water.
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