Algae - Easy Identification Of Freshwater

: These are large and "plant-like" but lack true roots and leaves.

For a more precise identification, you can use specialized tools: Easy identification of freshwater algae

: These look like hair-like strands or tangled mats. Spirogyra often feels slick and slimy. Pithophora feels "cottony" and coarse. : These are large and "plant-like" but lack

If you are observing algae in person, these simple characteristics can narrow it down: it may be cyanobacteria .

: If you can pick up the algae with a stick and it hangs like hair, it is likely a filamentous green alga. If it is slimy and slips off immediately, it may be cyanobacteria .