Pleuropterus multiflorus

Pleuropterus multiflorus
	Chinese knotweed
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Polygonaceae
Genus:	Pleuropterus
Species:	P. multiflorus
Binomial name
	Pleuropterus multiflorus; (Thunb.) Turcz. ex Nakai
Synonyms
	Synonymy Aconogonon hypoleucum (Ohwi) Soják ; Bilderdykia multiflora (Thunb.) Roberty & Vautier ; Fagopyrum multiflorum (Thunb.) Grinţ. ; Fallopia multiflora (Thunb.) Haraldson ; Fallopia multiflora var. hypoleuca (Ohwi) Yonek. & H.Ohashi ; Helxine multiflorum (Thunb.) Raf. ; Pleuropterus cordatus Turcz. ; Pleuropterus hypoleucus Nakai ; Polygonum chinense Houtt. ; Polygonum hypoleucum (Nakai) Kudô & Sasaki ; Polygonum hypoleucum Ohwi ; Polygonum multiflorum Thunb. (basionym) ; Polygonum multiflorum var. hypoleucum (Ohwi) T.S.Liu, S.S.Ying & M.J.Lai ; Reynoutria multiflora (Thunb.) Moldenke ; Reynoutria multiflora var. hypoleuca (Ohwi) S.S.Ying ;

Pleuropterus multiflorus (syns. Fallopia multiflora, Polygonum multiflorum, and Reynoutria multiflora) is a species of flowering plant in the buckwheat family Polygonaceae native to central and southern China, Hainan, Taiwan, Vietnam, and Thailand. It is known by the English common names tuber fleeceflower and Chinese (climbing) knotweed. It is known as he shou wu (何首烏) in China and East Asia. Another name for the species is fo-ti, which is a misnomer.

It can be difficult to prevent the spread of this vine and to remove it once established. The leaves are thin and fragile but the stems, although narrow in diameter, can be very strong.