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Polygonaceae
Polygonum

not marked as a favorite taxon Polygonum Linnaeus. Common name: Knotweed.

Key to Polygonum

A genus of about 45 species, herbs, of temperate regions of the Northern Hemisphere. Based on morphology, Ronse Decraene, Hong, & Smets (2004) suggested that Polygonella should be merged into Polygonum, as part of section Duravia; the close relationship of Polygonella and Polygonum section Duravia was confirmed using molecular evidence by Schuster, Reveal, & Kron (2011). We support a treatment in which Polygonum, Polygonella, and Duravia are recognized as three monophyletic genera; combinations are not yet available to treat all members of section Duravia at generic rank as genus Duravia, however.

Glossary (beta!)

Subfamily: Polygonoideae. Tribe: Polygoneae.

References: Brandbyge (1993) In Kubitzki, Rohwer, & Bittrich (1993); Costea & Tardif (2003a); Costea, Tardif, & Hinds (2005f) In Flora of North America Editorial Committee (2005); Horton (1961); Ronse De Craene, Hong, & Smets (2004); Schuster, Reveal, & Kron (2011). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image #1 of Polygonum© Andrey Zharkikh, some rights reserved (CC BY-NC), uploaded by Andrey Zharkikh | Polygonum argyrocoleon source | Original Image ⭷
image #2 of Polygonum© Scott Ward | Polygonum glaucum | Original Image ⭷
image #3 of Polygonum© Alan M. Cressler | Polygonum tenue | Original Image ⭷
image #4 of Polygonum© Gary P. Fleming | Polygonum erectum | Original Image ⭷
image #5 of Polygonum© Aidan Campos | Polygonum tenue source | Original Image ⭷
image #6 of Polygonum© Erik Danielson | Polygonum aviculare ssp. buxiforme source | Original Image ⭷
image #7 of Polygonum© Ryan Sorrells, some rights reserved (CC BY), uploaded by Ryan Sorrells | Polygonum achoreum source | Original Image ⭷

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