Leiden University Library - Seikei Zusetsu vol

''Persicaria'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of herbaceous

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

s in the knotweed family,

Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1 ...

. Plants of the genus are known commonly as knotweeds or smartweeds.''Persicaria''.
Flora of North America. It has a cosmopolitan distribution, with species occurring nearly worldwide.''Persicaria''.
New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney. The genus was segregated from ''

Polygonum ''Polygonum'' is a genus of about 130 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass (though the common names may refer more broadly to plants from Polygonaceae). In t ...

''.Wilson, K. L. (1990)
Some widespread species of ''Persicaria'' (Polygonaceae) and their allies.
''Kew Bulletin'' 45(4) 621-36. Persicaria amphibia kz3

Persicaria glabra in Narshapur forest, AP W IMG 1109

Description

The genus includes annual and perennial herbs with

taproot A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward. In some plants, such as the carrot, the taproo ...

s or fibrous root systems, or with rhizomes or

stolon In biology, stolons (from Latin '' stolō'', genitive ''stolōnis'' – "branch"), also known as runners, are horizontal connections between organisms. They may be part of the organism, or of its skeleton; typically, animal stolons are external ...

s. The stems are often erect but may be prostrate along the ground, and some species are prickly. The stems are self-supporting or twining and climbing.''Persicaria''.
FloraBase. Western Australian Herbarium. The leaves are alternately arranged,

deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, a ...

, and variously shaped. The brownish or reddish

ochrea An ochrea (Latin ''ocrea'', greave or protective legging), also spelled ocrea, is a plant structure formed of stipules fused into a sheath surrounding the stem, and is typically found in the Polygonaceae The Polygonaceae are a family of flower ...

may be leathery to papery. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed ...

may be a

panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit In botany, a fruit is the seed-bearing structure in flowering plants that is ...

or a spikelike or headlike arrangement of fascicles of flowers. The flower is white, greenish, reddish, pink or purple, with the

tepal A tepal is one of the outer parts of a flower (collectively the perianth). The term is used when these parts cannot easily be classified as either sepals or petals. This may be because the parts of the perianth are undifferentiated (i.e. of very ...

s partially fused together along the bases. The fruit is an

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not op ...

which can take a number of shapes, including a disc or a sphere.

Taxonomy

Within the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

, ''Persicaria'' is placed in the subfamily

Polygonoideae Polygonoideae is a subfamily of plants in the family Polygonaceae. It includes a number of plants that can be highly invasive, such as Japanese knotweed, ''Reynoutria japonica'', and its hybrid with '' R. sachalinensis'', ''R.'' × ''bohemica'' ...

, where the

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confl ...

Persicarieae consists of two

sister A sister is a woman or a girl who shares one or more parents with another individual; a female sibling. The male counterpart is a brother. Although the term typically refers to a familial relationship, it is sometimes used endearingly to refer to ...

genera, ''

Bistorta ''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern ...

'' and ''

Koenigia :Koenigia'' as described by Philibert Commerçon is a synonym of '' Dombeya. ''Koenigia'' is a genus of plants in the family Polygonaceae. The genus ''Aconogonon'' has been merged into ''Koenigia''. Description Species of ''Koenigia'' are an ...

'', together with ''Persicaria''.

Species

Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants ...

accepted the following 131 species: *'' Persicaria acuminata'' (Kunth) M.Gómez *''

Persicaria akakiensis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria amphibia ''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. It is native to ...

'' (L.) Delarbre – amphibious bistort, water smartweed *''

Persicaria angustifolia ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria arifolia ''Persicaria arifolia'' is a flowering plant species in the family Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based o ...

'' (L.) Haraldson – halberd-leaf tearthumb *''

Persicaria assamica ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria attenuata ''Persicaria attenuata'' is a species of flowering plant native plant, native to Australia and Asia. It typically grows in wet land or streams. References

Flora of New South Wales Perennial plants Persicaria, attenuata {{Polygonaceae ...

'' (R.Br.) Soják *''

Persicaria barbata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria biconvexa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria bicornis ''Persicaria bicornis'' is a North American species of flowering plant in the buckwheat family (Polygonaceae). The common name is pink smartweed. It is native to the central and southwestern United States from northern Texas west to Arizona, eas ...

'' (Raf.) Nieuwl. – pink smartweed *''

Persicaria breviochreata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria bungeana ''Persicaria bungeana'' is a herbaceous annual, flowering plant species in the family Polygonaceae. Commonly known as prickly smartweed or Bunge's smartweed, it is a weed found in soybean fields of the Mid-Western United States of America. De ...

'' (Turcz.) Nakai – prickly smartweed *''

Persicaria capitata ''Persicaria capitata'', the pink-headed persicaria, pinkhead smartweed, pink knotweed, Japanese knotweed, or pink bubble persicaria, is an Asian species of plants in the genus ''Persicaria'' within the buckwheat family. It is native to Asia (Ch ...

'' (Buch.-Ham. ex D.Don) H.Gross – pink-head knotweed *''

Persicaria careyi ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria cespitosa ''Persicaria cespitosa'' (synonym ''Polygonum cespitosum''), known as tufted knotweed, is a summer annual weedy plant of the family Polygonaceae, native to eastern Asia, from China to Japan and Southeast Asia, and introduced into North America. ...

'' (Blume) Nakai *'' Persicaria chinensis'' (L.) H.Gross – Chinese knotweed *''

Persicaria debilis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria decipiens ''Persicaria decipiens'', commonly known as slender knotweed, is a species of flowering plant native to Australia and Asia. ''Persicaria decipiens'' is a trailing plant whose stems grow horizontally at first but become more vertical with time, ...

'' (R.Br.) K.L.Wilson – slender knotweed, willow-weed *''

Persicaria dichotoma ''Persicaria dichotoma'' is a species of flowering plant native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular ...

'' (Blume) Masam. *''

Persicaria dissitiflora ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria eciliata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria extremiorientalis ''Persicaria extremiorientalis'', the east Asian smartweed, is a plant species in the buckwheat family, native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights ...

'' (Vorosch.) Tzvelev *''

Persicaria ferruginea ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria filiformis ''Persicaria filiformis'' is a species of flowering plant in the family Polygonaceae, native to the Kuril Islands, Japan (including the Ryukyu Islands), Korea, Myanmar, the Philippines and Vietnam. It was first described as ''Polygonum filif ...

'' (Thunb.) Nakai *''

Persicaria foliosa ''Persicaria foliosa'' is a species of flowering plant belonging to the family Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The nam ...

'' (H.Lindb.) Kitag. *''

Persicaria galapagensis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria glabra ''Persicaria glabra'' is a species of flowering plant native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular t ...

'' (Willd.) M.Gómez' – smooth smartweed *''

Persicaria glacialis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria glandulopilosa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria glomerata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria hastatosagittata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria hirsuta ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria hispida ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria humilis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria hydropiper ''Persicaria hydropiper'' (syn. ''Polygonum hydropiper''), also known as water pepper, marshpepper knotweed, arse smart or tade, is a plant of the family Polygonaceae. A widespread species, ''Persicaria hydropiper'' is found in Australia, New Ze ...

'' (L.) Delarbre – water-pepper, marsh-pepper smartweed *''

Persicaria hydropiperoides ''Persicaria hydropiperoides'' is a New World species of flowering plant in the Polygonaceae, buckwheat family known by the common names swamp smartweed and false waterpepper. It is widespread across much of North America and South America.Cowan, ...

'' (Michx.) Small – swamp smartweed, mild water-pepper *''

Persicaria hystricula ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria japonica'' (Meisn.) Nakai *''

Persicaria kawagoeana ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria lanigera ''Persicaria lanigera'' is a species of plants in the family Polygonaceae. Sources References {{Taxonbar, from=Q15596040 lanigera ...

'' (R.Br.) Soják *''

Persicaria lapathifolia ''Persicaria lapathifolia'' (syn. ''Polygonum lapathifolium''), known as pale persicaria, is a plant of the family Polygonaceae. It is closely related to '' Persicaria maculosa'' and as such is considered a weed in Britain and Europe. Other co ...

'' (L.) Delarbre – pale persicaria *''

Persicaria laxmannii ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria limbata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria longiseta ''Persicaria longiseta'' is a species of flowering plant in the knotweed family known by the common names Oriental lady's thumb, bristly lady's thumb, Asiatic smartweed, long-bristled smartweed, low smartweed, Asiatic waterpepper, bristled knotw ...

'' (Bruyn) Kitag. – bristly lady's thumb *''

Persicaria maackiana ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria macrantha ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria maculosa ''Persicaria maculosa'' (syn. ''Polygonum persicaria'') is an annual plant in the buckwheat family, Polygonaceae. Common names include lady's thumb, spotted lady's thumb, Jesusplant, and redshank. It is widespread across Eurasia from Iceland sout ...

'' Gray – Jesusplant, spotted lady's thumb, redshank *''

Persicaria madagascariensis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria malaica ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria meisneriana ''Persicaria meisneriana'' is a flowering plant species in the family Polygonaceae. References meisneriana {{Polygonaceae-stub ...

'' (Cham. & Schltdl.) M.Gómez – Mexican tearthumb *''

Persicaria microcephala ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria minor ''Persicaria minor'' is species of herb in the family Polygonaceae. Common names include pygmy smartweed, small water pepper and swamp willow weed. This herb is native to Asia, but distributed widely in Europe and Australia. It is used in South E ...

'' (Huds.) Opiz – small water-pepper *''

Persicaria mitis ''Persicaria mitis'' (Schrank) Assenov is a species of flowering plant in the family Polygonaceae, native to Europe. (''Persicaria mitis'' Delarbre is a different species, being a rejected synonym of '' Persicaria maculosa''.) Taxonomy The speci ...

'' (Schrank) Assenov *''

Persicaria muricata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria neofiliformis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria nepalensis ''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 (i ...

'' (Meisn.) Miyabe) – Nepal knotweed *''

Persicaria nogueirae ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria obtusifolia ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria odorata ''Persicaria odorata'', with common names Vietnamese coriander, rau răm, laksa leaf, Vietnamese cilantro, phak phai, praew leaf, hot mint and Cambodian mint, is an herb with aromatic leaves, used in Southeast Asian and Northeast Indian cooking. ...

'' (Lour.) Soják – Vietnamese coriander *''

Persicaria orientalis ''Persicaria orientalis'' is a species of flowering plant in the family Polygonaceae, known as kiss-me-over-the-garden-gate and princess-feather. It was first described, as ''Polygonum orientale'', by Carl Linnaeus in 1753. It was transferr ...

'' (L.) Spach – kiss-me-over-the-garden-gate, prince's feather, princess-feather *''

Persicaria palmata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria paraguayensis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria peduncularis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria pensylvanica ''Persicaria pensylvanica'' (syn. ''Polygonum pensylvanicum'') 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. It has also bee ...

'' (L.) M.Gómez) – Pennsylvania smartweed *''

Persicaria perfoliata ''Persicaria perfoliata'' (basionym ''Polygonum perfoliatum'') is a species of flowering plant in the buckwheat family. Common names include mile-a-minute, devil's tail, giant climbing tearthumb, and Asiatic tearthumb. It is a trailing herbaceous ...

'' (L.) H.Gross *''

Persicaria poiretii ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria posumbu ''Persicaria posumbu'' is a species of flowering plant in the family Polygonaceae. It was first described as ''Polygonum posumbu'' in 1825 and transferred to the genus ''Persicaria'' in 1919. Plants of the World Online records it as having a dis ...

'' (Buch.-Ham. ex D.Don) H.Gross *''

Persicaria praetermissa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria prostrata ''Persicaria prostrata'', basionym ''Polygonum prostratum'', is a species of flowering plant in the family Polygonaceae, native to Australia and perhaps New Zealand. It is known by the common name of creeping knotweed. Description Decumbent p ...

'' (R.Br.) Soják - Creeping Knotweed *''

Persicaria pubescens ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria pulchra ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria punctata ''Persicaria punctata'' (syn. ''Polygonum punctatum'') is a species of flowering plant in the knotweed family known by the common names dotted smartweed and dotted knotweed. ''Persicaria punctata'' is native to the Americas, where it can be fou ...

'' (Elliott) Small – dotted knotweed *''

Persicaria puritanorum ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria robustior ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria roseoviridis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria rubricaulis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria rudis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria runcinata ''Persicaria runcinata'' is a species of flowering plant in the family Polygonaceae, native to the eastern Himalayas and Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicatin ...

'' (Buch.-Ham. ex D.Don) H.Gross *''

Persicaria sagittata ''Persicaria sagittata'', common names American tearthumb, arrowleaf tearthumb, or arrowvine, is a plant species widespread in the eastern half of North America as well as in eastern Asia. It has been found in every state and province from Texas ...

'' (L.) H.Gross – American tearthumb, arrowleaf tearthumb, arrowvine *''

Persicaria segetum ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria senegalensis ''Persicaria senegalensis'' is a species of perennial herb in the family Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is b ...

'' (Meisn.) Soják *''

Persicaria senticosa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria setacea ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria setosula ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria sinica ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria sinuata ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria stagnina ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria stelligera ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria strigosa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria subsessilis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria sungareensis ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria taquetii ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria tenella ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria thunbergii ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria tinctoria ''Persicaria tinctoria'' is a species of flowering plant in the buckwheat family. Common names include Chinese indigo and Japanese indigo. It is native to Eastern Europe and Asia. The leaves were a source of indigo dye. It was already in use in ...

'' (Aiton) Spach – Chinese indigo, polygonum-indigo *''

Persicaria trigonocarpa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria truellum ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria virginiana ''Persicaria virginiana'', also called jumpseed, Virginia knotweed or woodland knotweed is a North American species of smartweed within the buckwheat family. It is unusual as a shade-tolerant member of a mostly sun-loving genus. Jumpseed is a p ...

'' (L.) Gaertn. – jumpseed *''

Persicaria viscofera ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria viscosa ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds.Persicaria wellensii ''Persicaria'' is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds. Polygonaceae genera Taxa named by Philip Miller