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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 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.
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]
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 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 ]
Polygonum plebeium or small knotweed The last comprehensive revision of the family was published in 1993 by John Brandbyge as part of The Families and Genera of Vascular Plants . [ 7 ] Brandbyge followed earlier systems of plant classification in dividing Polygonaceae into two subfamilies , Eriogonoideae and Polygonoideae .
Persicaria bistortoides (Pursh) H.R. Hinds Polygonum bistortoides Pursh Bistorta bistortoides ( American bistort , western bistort , smokeweed , mountain meadow knotweed , mountain buckwheat or mountain meadow buckwheat ) is a perennial herb in the buckwheat and knotweed family Polygonaceae .
Persicaria perfoliata (basionym Polygonum perfoliatum [1]) is a species of flowering plant in the buckwheat family. Common names include mile-a-minute, devil's tail, giant climbing tearthumb, [2] [3] and Asiatic tearthumb. [4] It is a trailing herbaceous annual vine with barbed stems and triangular leaves.