Alismataceae: Water-plantain Family
Northern Water-plantain – Alisma triviale
Despite its name, this is unrelated to plantains. It belongs to the same group (Monocots) as lilies, irises, orchids, reeds, rushes and grasses. Its flowers show a typical monocot feature: its tiny flower has 3 (or a multiple of 3) parts. Its large leaves are reminiscent of Plantain leaves, but the flowers and upright/straggly growth habit could hardly be more different.