brown algae

n the chlorophyll present in brown algae, diatoms, and flagellates

n small family of brown algae: gulfweeds

brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea

n large family of marine brown algae including many economically important large kelps chiefly of northern waters

in some classifications coextensive with family Laminariaceae: marine brown algae of cold or polar seas