BugwoodWiki Article

Bohemian knotweed
Fallopia x bohemica (Chrtek & Chrtková) J.P.Bailey

Overview

Appearance
Fallopia x bohemica is a perennial that can grow from 6-12 ft. (1.8-3.7 m) tall.
Foliage
Stems are usually erect, clustered, and glabrous. Leaves are ovate, base is truncate to cordate, entire margins, and acute tips.
Flowers
Flowers are white to pink, 0.16-0.24 in. (4-6 mm), tepals are obovate to elliptic, and apex is obtuse to acute. Flowering occurs between July and October.
Fruit
The fruits are dark brown in color, shiny, 0.08-0.12 (2-3 mm) long, smooth, and three sided with flat wings that are 0.06-0.08 in. (1.5-2.1 mm) wide.
Ecological Threat
Fallopia x bohemica prefers disturbed areas such as fields, pastures, and along roadsides and railways. It is native to Japan.

Selected Images


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Bohemian knotweed
Fallopia x bohemica
Plant(s)
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Plant(s)
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Stem(s)
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Stem(s)
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Stem(s)
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Foliage
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Foliage
Robert Vidéki
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Bohemian knotweed
Fallopia x bohemica
Foliage
Leslie J. Mehrhoff
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Bohemian knotweed
Fallopia x bohemica
Fruit(s)
Leslie J. Mehrhoff
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Bohemian knotweed
Fallopia x bohemica
Fruit(s)
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Bohemian knotweed
Fallopia x bohemica
Fruit(s)
Leslie J. Mehrhoff
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Bohemian knotweed
Fallopia x bohemica
Fruit(s)
Leslie J. Mehrhoff

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Caryophyllidae
Order: Polygonales
Family: Polygonaceae
Genus: Fallopia

Synonyms and Other Names

Related Scientific Names:

Polygonum x bohemicum (J. Chrtek & Chrtkov├č) Zika & Jacobson [cuspidatum x sachalinense](Synonym)

Categories

Category: Forbs/Herbs
Category: Shrub or Subshrub

References

Common Name Reference: Derived from taxonomy / Generic common name

Scientific Name Reference: Derived from taxonomy / Generic common name