What is "azolla"

Azolla \Azolla\ n. a genus of ferns, someties placed in its own family Azollaceae.

Syn: genus Azolla.

Azolla (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling duckweed or some mosses.