馬尾藻類海草
Sargassum \Sar*gas"sum\, n. [NL.] A genus of alg[ae] including the gulf weed.
sargassum n : brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea [syn: {gulfweed}, {sargasso}, {Sargassum bacciferum}]