Polygonum

Polygonum reichenbachii

Polygonum robertii

Polygonum roylei

Polygonum schimperi

Polygonum arenastrum subsp. caspicum

Polygonum aviculare var. fuscoochreatum

Polygonum kelloggii var. esotericum

Polygonum setosum subsp. luzuloides

Polygonum aviculare subsp. excelsius

Polygonum arenastrum subsp. arenastrum

Polygonum sabulosum

Polygonum polygaloides subsp. kelloggii

Polygonum polygamum

Polygonum longipes

Polygonum plebeium

Polygonum molliiforme

Polygonum microcephalum

Polygonum caducifolium

Polygonum tortuosum

Polygonum arenarium

European knotweed