Sargassum
algae genus
also called gulfweed
genus of brown algae (150 species) generally attached to rocks along coasts in temperate regions. The Sargasso Sea is characterized by a free-floating mass of seaweed, predominately S. natans and S. fluitans, in the western Atlantic Ocean.Sargassum is also known as sea holly because of its highly branched thallus with hollow, berrylike floats (pneumatocysts) and many leaflike sawtooth-edged blades. It is used as fertilizer in New Zealand. Most species reproduce sexually, but S. natans reproduces only by fragmentation.
- marsh treader
- Marsh, Warne
- Marsi
- Marsileaceae
- Marsilio Ficino
- Marsilius Of Padua
- Mars-la-Tour and Gravelotte, Battles of
- Marsman, Hendrik
- Mars Pathfinder
- Marston Bates
- Marston, John
- Marston Moor, Battle of
- marsupial
- marsupial mole
- marsupial mouse
- Marsyas
- Marsyas Painter
- Marsā al-Burayqah
- Marsā Maṭrūḥ
- marten
- Marten, Henry
- Martens, Fyodor Fyodorovich
- Martens, Georg Friedrich von
- Martha and the Vandellas
- Martha Carey Thomas