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Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds [ 2 ] : 436 or smartweeds . [ 3 ] It has a cosmopolitan distribution , with species occurring nearly worldwide.
Persicaria pensylvanica (syn. Polygonum pensylvanicum [1]) is a species of flowering plant in the buckwheat family, Polygonaceae. It is native to parts of North America, where it is widespread in Canada and the United States. [2] It has also been noted as an introduced species in parts of Europe and South America. [3]
Persicaria maculosa (syn. Polygonum persicaria) is an annual plant in the buckwheat family, Polygonaceae. Common names include lady's thumb, [4] spotted lady's thumb, Jesusplant, and redshank. [5] [6] It is widespread across Eurasia from Iceland south to Portugal and east to Japan.
Polygonum salicifolium Schur 1866 not Brouss. ex Willd. 1809 Persicaria amphibia ( syn. Polygonum amphibium ) is a species of flowering plant in the knotweed family known by several common names, including longroot smartweed , water knotweed , water smartweed , and amphibious bistort .
Persicaria runcinata is a species of flowering plant in the family Polygonaceae, native from the Himalayas east through mainland China to Taiwan and south to Java and the Philippines. [1] It was first described in 1825 as Polygonum runcinata .
Persicaria nepalensis is a species of flowering plant in the family Polygonaceae, native to eastern Africa, including Madagascar, and parts of Asia. It has been introduced elsewhere: parts of Europe (including Great Britain ), North America (including British Columbia, Connecticut, Massachusetts, New York and Pennsylvania) and northern South ...
Persicaria posumbu is a species of flowering plant in the family Polygonaceae. [1] It was first described as Polygonum posumbu in 1825 and transferred to the genus Persicaria in 1919. [ 2 ] Plants of the World Online records it as having a discontinuous native distribution: the Assam region , Bangladesh and the eastern Himalayas to the west ...
Persicaria lapathifolia (syn. Polygonum lapathifolium), known as pale persicaria, [2] is a plant of the family Polygonaceae. It is considered to be native throughout most of the world, from arctic to tropical realms, except South America and Southern Africa. [ 3 ]