Family, Loosestrife. Color, pale purple. Calyx, tubular, with 5 to 7 teeth; other teeth, called "processes," alternate with them. Petals, 5 to 7. Stamens, equal in number to or twice as many as petals, usually 4 to 6. Fruit, a 2-celled pod. Flowers, small, inconspicuous, single, growing in the upper leaf-axils. Leaves, alternate, scattered, oblong to linear, sessile, obtuse at apex, rounded at base. June to September.