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.[3]
The species is an herbaceous perennial that can spread through seeds and rhizomes. It can exceed 3.5 meters in height. Leaves are larger than those of Japanese knotweed, and leaf bases are less squared. White flowers typically open in August.[3] The species can be verified by the hairs along the mid-vein on the undersides of leaves, which are of different shape and texture than those found on either parent species.[4]
Distributionedit
Bohemian knotweed is typically found in riparian areas and waste places.[3] From the late 1800s, knotweeds have been introduced to new areas as an ornamental garden plant.[1]
The species has a worldwide distribution. It is considered by some as being a native hybrid of Japan.[1] In Europe, it has been reported from the British Isles, Germany, France, northern Italy, Serbia, Bulgaria, Belgium, the Czech Republic, Slovakia, Romania, Ukraine, Scandinavia, and Switzerland. It is widespread in North America, and it has been discovered in Chile. It has also been found in Australia.[3]
Managementedit
In some areas, Bohemian knotweed is classified as an invasive species and a noxious weed. It is illegal to transport and sell in multiple US states, including Minnesota,[1] Washington,[5] and Wisconsin.[6]
Mechanical control and hand pulling are ineffective. Repeat herbicide application through spraying leaves and injecting stems is the best method.[7] The beetle Gallerucida nigromaculata has been considered to have potential as a biological control.[3]
Referencesedit
^ abcd"Bohemian Knotweed | Minnesota Department of Agriculture". www.mda.state.mn.us. Retrieved 18 October 2022.
^"Reynoutria ×bohemica Chrtek & Chrtková". www.gbif.org. Retrieved 24 October 2022.
^ abcdef"Fallopia x bohemica". www.cabi.org. Retrieved 24 October 2022.
^"Hybrid knotweed (Bohemian knotweed) identification and control". Retrieved 24 October 2022.
^"Washington State Noxious Weed Control Board". www.nwcb.wa.gov. Retrieved 24 October 2022.
^"Bohemian knotweed | (Fallopia x bohemicum or F. x bohemica or Polygonum x bohemicum) | Wisconsin DNR". dnr.wisconsin.gov. Retrieved 24 October 2022.
^"Bohemian Knotweed". Invasive Species Centre. Retrieved 24 October 2022.
April 16, 2024
bohemian, knotweed, nothospecies, that, cross, between, japanese, knotweed, giant, knotweed, been, documented, occurring, wild, japan, scientific, name, accepted, reynoutria, bohemica, also, referred, fallopia, bohemica, polygonum, bohemicum, scientific, class. 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 3 Bohemian knotweedScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder CaryophyllalesFamily PolygonaceaeGenus ReynoutriaSpecies R bohemicaBinomial nameReynoutria bohemicaChrtek amp ChrtkovaThe species was first described by Jindrich Chrtek es and Anna Chrtkova cy in the Czech Republic in 1983 3 Contents 1 Description 2 Distribution 3 Management 4 ReferencesDescription editThe species is an herbaceous perennial that can spread through seeds and rhizomes It can exceed 3 5 meters in height Leaves are larger than those of Japanese knotweed and leaf bases are less squared White flowers typically open in August 3 The species can be verified by the hairs along the mid vein on the undersides of leaves which are of different shape and texture than those found on either parent species 4 Distribution editBohemian knotweed is typically found in riparian areas and waste places 3 From the late 1800s knotweeds have been introduced to new areas as an ornamental garden plant 1 The species has a worldwide distribution It is considered by some as being a native hybrid of Japan 1 In Europe it has been reported from the British Isles Germany France northern Italy Serbia Bulgaria Belgium the Czech Republic Slovakia Romania Ukraine Scandinavia and Switzerland It is widespread in North America and it has been discovered in Chile It has also been found in Australia 3 Management editIn some areas Bohemian knotweed is classified as an invasive species and a noxious weed It is illegal to transport and sell in multiple US states including Minnesota 1 Washington 5 and Wisconsin 6 Mechanical control and hand pulling are ineffective Repeat herbicide application through spraying leaves and injecting stems is the best method 7 The beetle Gallerucida nigromaculata has been considered to have potential as a biological control 3 References edit a b c d Bohemian Knotweed Minnesota Department of Agriculture www mda state mn us Retrieved 18 October 2022 Reynoutria bohemica Chrtek amp Chrtkova www gbif org Retrieved 24 October 2022 a b c d e f Fallopia x bohemica www cabi org Retrieved 24 October 2022 Hybrid knotweed Bohemian knotweed identification and control Retrieved 24 October 2022 Washington State Noxious Weed Control Board www nwcb wa gov Retrieved 24 October 2022 Bohemian knotweed Fallopia x bohemicum or F x bohemica or Polygonum x bohemicum Wisconsin DNR dnr wisconsin gov Retrieved 24 October 2022 Bohemian Knotweed Invasive Species Centre Retrieved 24 October 2022 Retrieved from https en wikipedia org w index php title Bohemian knotweed amp oldid 1127955464, wikipedia, wiki, book, books, library,
