Mosquito ferns

Plant
Azolla 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. Azolla filiculoides is one of... Wikipedia
Scientific name: Azolla
Family: Salviniaceae
Division: Polypodiophyta
Genus: Azolla; Lam.
Lower classifications