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Gallerucida bifasciata, Japanese knotweed leaf beetle. Gallerucida is a genus of skeletonizing leaf beetles in the family Chrysomelidae. There are at least 19 described species in Gallerucida. They are found in Indomalaya and eastern Asia. [1] [2]
Japanese knotweed flowers are valued by some beekeepers as an important source of nectar for honeybees, at a time of year when little else is flowering. Japanese knotweed yields a monofloral honey, usually called bamboo honey by northeastern U.S. beekeepers, like a mild-flavored version of buckwheat honey (a related plant also in the Polygonaceae).
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]
Her distribution maps showed how the Knotweed hybrids spread across the UK. [6] An unusual hybrid knotweed, Conolly's knotweed, ×Reyllopia conollyana (syn. Fallopia × conollyana) was named in her honour in 2001 for her 84th birthday. [7] This is a hybrid between Japanese knotweed and Russian vine (Fallopia baldschuanica). [8]
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.
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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 .
Knotweed is a common name for plants in several genera in the family Polygonaceae. Knotweed may refer to: Fallopia; Persicaria; Polygonum; Reynoutria. Reynoutria japonica or Japanese knotweed, a highly invasive species in Europe and North America