Children (4 direct children, 4 direct and indirect children):
Polygonum polygaloides subsp. confertiflorum
Fruitleaf knotweed
Polygonum polygaloides subsp. esotericum
Whitemargin knotweed
Polygonum polygaloides subsp. kelloggii
Kellogg's knotweed
Polygonum polygaloides subsp. polygaloides
Milkwort knotweed