Persicaria

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Genus of flowering plants in the knotweed family, Polygonaceae

title: "Persicaria" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["persicaria", "polygonaceae-genera", "taxa-named-by-philip-miller"] description: "Genus of flowering plants in the knotweed family, Polygonaceae" topic_path: "general/persicaria" source: "https://en.wikipedia.org/wiki/Persicaria" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Genus of flowering plants in the knotweed family, Polygonaceae ::

|image = Persicaria capitata AF crop.jpg |image_caption = Persicaria capitata |taxon = Persicaria |authority = Mill. 1754 |subdivision_ranks = Species |subdivision = See text |synonyms_ref= |synonyms={{collapsible list|

  • Amblygonum Rchb.
  • Antenoron Raf.
  • Cephalophilon (Meisn.) Spach
  • Chylocalyx Hassk.
  • Echinocaulon (Meisn.) Spach
  • Echinocaulos Hassk.
  • Goniaticum Stokes
  • Heptarina Raf.
  • Lagunaea C.Agardh
  • Lagunea Lour.
  • Mitesia Raf.
  • Peutalis Raf.
  • Pogalis Raf.
  • Sunania Raf.
  • Tasoba Raf.
  • Tovara Adans.
  • Tracaulon Raf.
  • Truellum Houtt. ::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/ca/Leiden_University_Library_-_Seikei_Zusetsu_vol._25,page_010-大毛蓼-Persicaria_orientalis(L.)_Spach,_1804.jpg" caption="Illustration from the Japanese agricultural encyclopedia ''[[Seikei Zusetsu]]'' (1804)"] ::

Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds or smartweeds. It has a cosmopolitan distribution, with species occurring nearly worldwide. The genus was segregated from Polygonum.

Description

The genus includes annual and perennial herbs with taproots or fibrous root systems, or with rhizomes or stolons. The stems are often erect but may be prostrate along the ground, and some species are prickly. The leaves are alternately arranged, deciduous, and variously shaped. The brownish or reddish ochrea may be leathery to papery. The inflorescence may be a panicle or a spikelike or headlike arrangement of fascicles of flowers. The flower is white, greenish, reddish, pink or purple, with the tepals partially fused together along the bases. The fruit is an achene which can take a number of shapes, including a disc or a sphere.

Persicaria amphibia kz3.jpg|Persicaria amphibia (MHNT) Persicaria microcephala Inflorescence - Les Martels, Giroussens Tarn.jpg|Persicaria microcephala Persicaria glabra in Narshapur forest, AP W IMG 1109.jpg|Persicaria glabra Polygonum longisetum 3.JPG|Persicaria longiseta Persicaria minor flower and leaves.jpg|Persicaria minor Persicaria orientalis02.jpg|Persicaria orientalis

Taxonomy

Within the family Polygonaceae, Persicaria is placed in the subfamily Polygonoideae, where the tribe Persicarieae consists of two sister genera, Bistorta and Koenigia, together with Persicaria.

|label1=Persicarieae |1={{clade |1=Persicaria |2={{clade |1=Bistorta |2=Koenigia

Species

, the following 132 species were accepted:

Citations

General and cited references

References

  1. . (2017). ["''Persicaria'' Mill."](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60433517-2). *Board of Trustees of the Royal Botanic Gardens, Kew*.
  2. Stace, C. A.. (2010). "New Flora of the British Isles". Cambridge University Press.
  3. [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=124629 ''Persicaria''.] Flora of North America.
  4. [http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Persicaria ''Persicaria''.] New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney.
  5. Wilson, K. L. (1990). [https://www.jstor.org/discover/10.2307/4113867?uid=3739560&uid=2129&uid=2&uid=70&uid=4&uid=3739256&sid=21102193351923 "Some widespread species of ''Persicaria'' (Polygonaceae) and their allies"]. ''Kew Bulletin'' 45(4) 621-36.
  6. "''Persicaria'' Mill.". Royal Botanic Gardens, Kew.

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persicariapolygonaceae-generataxa-named-by-philip-miller