tape-grass
/ˈteɪpˌgrɑːs/noun
mass noun
1- a submerged aquatic plant of the frogbit family, with narrow grass-like leaves苦草。亦称RIBBON-GRASS,北美名EELGRASS.
1.1
- Genus Vallisneria, family Hydrocharitaceae: several species.苦草属, 水鳖科：数种。