persicaria longiseta is a species of flowering plant in the knotweed family known by the common names oriental lady's thumb,

persicaria background flora blossom closeup natural beautiful pink plant bloom green red leaf beauty flower summer floral nature garden outdoors spring japan japanese autumn color colorful season blooming water culture bright botany white petal asian purple creeping purplish roadside annual weed flowers wild weeds smartweeds grass field smartweed small magenta longiseta species flowering knotweed family common names oriental lady's thumb bristly asiatic long-bristled low waterpepper bristled bunchy tufted knotweed