Full scientific name Reynoutria Houtt. Number of records 269 Currently classified as a weed No This genus is in the family: Polygonaceae Family The genus Reynoutria includes: Reynoutria compacta Species Reynoutria japonica Species Scientific synonyms Fallopia japonica Common names Asiatic knotweed Japanese knotweed Reynoutria multiflora Species Scientific synonyms Fallopia multiflora Common names tuber fleeceflower Reynoutria sachalinensis Species Scientific synonyms Fallopia sachalinensis Common names giant knotweed Reynoutria × bohemica Species Scientific synonyms Fallopia japonica ×sachalinensis Common names Bohemian knotweed Reynoutria × moravica Species