Alisma grimineum (Argentine Sword)

Family alismataceae

Being a perennial aquatic plant, the Alisma grimineum (Argentine Sword) has basal leaves clustering together and long petiolates, standing above the water. Its entire leaves are long oval or close to oblong, blossoming in summer. The scape is square or circular in shape. The corollas are white, petals are three, and anthers are yellow.