shoalgrass

\\ˈ ̷ ̷ˌ ̷ ̷\ noun

Etymology: shoal (II) + grass

: a submerged herb (Halodule wrightii) of the family Potamogetonaceae that is native to the southeastern coastal U.S., has flat linear leaves and flowers with anthers unequally attached to the filament, and is an important food for wild fowl