Polygonum

Polygonum turgidum

Polygonum angustifolium

Polygonum dshawachischwilii

Polygonum erectum

Polygonum humifusum

Polygonum weyrichii

Polygonum divaricatum

Polygonum brittingeri

Polygonum stypticum

Polygonum majus

Wiry knotweed

Polygonum achoreum

Polygonum cascadense

Polygonum nuttallii

Polygonum heterosepalum

Polygonum fowleri

Polygonum marinense

Polygonum paronychia

Polygonum parryi

Parry's knotweed

Polygonum brasiliense

Polygonum franktonii