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New leaves of Reynoutria japonica are dark red and 1 to 4 cm (1 ⁄ 2 to 1 + 1 ⁄ 2 in) long; young leaves are green and rolled back with dark red veins; leaves are green and shaped like a heart flattened at the base, or a shield, and are usually around 12 cm (5 in) long. Mature R. japonica forms 2-to-3-metre-tall (6 + 1 ⁄ 2 to 10 ft), dense ...
Fallopia × bohemica → Reynoutria × bohemica, Bohemian knotweed. Fallopia ciliinodis (Michx.) Holub – fringed black bindweed → Polygonum ciliinode; Fallopia denticulata (C.C.Huang) Holub → Pteroxygonum denticulatum; Fallopia japonica Houtt. – Japanese knotweed → Reynoutria japonica; Fallopia sachalinensis – giant knotweed → ...
Reynoutria is a genus of flowering plants in the Polygonaceae, also known as the knotweed or buckwheat family. The genus is native to eastern China, Eastern Asia and the Russian Far East , although species have been introduced to Europe and North America. [ 1 ]
Reynoutria japonica or Japanese knotweed, a highly invasive species in Europe and North America Index of plants with the same common name This page is an index of articles on plant species (or higher taxonomic groups) with the same common name ( vernacular name).
Bohemian knotweed is a nothospecies that is a cross between Japanese knotweed and giant knotweed.It has been documented as occurring in the wild in Japan. [1] The scientific name is accepted to be Reynoutria × bohemica, [2] but it may also be referred to as Fallopia × bohemica and Polygonum × bohemicum.
Aphalara itadori, the Japanese knotweed psyllid, is a species of psyllid from Japan which feeds on Japanese knotweed (Reynoutria japonica).. The UK Government licensed the use of this species as a biological control to counter the spread of Japanese knotweed in England; this was the first time that biological control of a weed was sanctioned in the European Union.
Polygonoideae is a subfamily of plants in the family Polygonaceae.It includes a number of plants that can be highly invasive, such as Japanese knotweed, Reynoutria japonica, and its hybrid with R. sachalinensis, R. × bohemica.
Reynoutria sachalinensis is a herbaceous perennial plant growing to 2–4 m (79–157 in) tall, with strong, extensively spreading rhizomes forming large clonal colonies. The leaves are some of the largest in the family, up to 15–40 cm (6–15.5 in) long and 10–28 cm (4–11 in) broad, nearly heart-shaped, with a somewhat wavy, crenate margin.