Lythrum
noun
Ly·thrum
ˈlīthrəm
: a genus (the type of the family Lythraceae) of herbs and subshrubs having purple or rose-pink flowers with 4 to 8 petals and a 2-celled capsule see loosestrife sense 2
Word History
Etymology
New Latin, from Greek lythron gore; from the color of the flowers; akin to Latin lutum mud