# Polygonum minimum

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> Source: https://en.wikipedia.org/wiki/Polygonum_minimum
> Source revision: 1160264783
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{{Short description|Species of flowering plant}}
{{Speciesbox
|image = UC1755378 Polygonum minimum.jpg
|genus = Polygonum
|species = minimum
|authority = [S.Watson](/source/Sereno_Watson) 1871
|synonyms_ref = <ref>[http://www.theplantlist.org/tpl1.1/record/tro-26000870 The Plant List, ''Polygonum minimum'' S. Watson ]</ref>
|synonyms = ''Polygonum torreyi'' <small>S. Watson</small>
}}

'''''Polygonum minimum''''' is a species of flowering plant in the [knotweed family](/source/Polygonaceae) known by the common name '''broadleaf knotweed'''. It is native to much of western North America where it can be found in mountainous regions. It grows in the [subalpine](/source/subalpine) and [alpine climate](/source/alpine_climate)s of high mountain ranges from [Alaska](/source/Alaska) to [Arizona](/source/Arizona) and [New Mexico](/source/New_Mexico).<ref>[http://bonap.net/MapGallery/State/Polygonum%20minimum.png Biota of North America Program 2014 state-level distribution map]</ref>

==Description==
''Polygonum minimum'' is an annual herb producing slender, stiff, zigzag-angled reddish stems up to 30 centimeters (1 foot) long, growing prostrate or erect. The leaves are lance-shaped to widely oval or nearly round and are located all along the stems but most crowded near the tips. [Inflorescence](/source/Inflorescence)s occur in the leaf axils, each bearing one or more five-lobed white flowers.<ref>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250060744 Flora of North America, ''Polygonum minimum'' S. Watson, 1871. Broad-leaf or leafy dwarf knotweed ]</ref>

==References==
{{Reflist}}

==External links==
*[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?5936,6248,6273 Jepson Manual Treatment - ''Polygonum minimum'']
*[http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Polygonum+minimum ''Polygonum minimum'' - Calphotos Photo gallery, University of California]

{{Taxonbar|from=Q7226464}}

minimum
Category:Alpine flora
Category:Flora of Northern America
Category:Plants described in 1871

{{Polygonaceae-stub}}

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Adapted from the Wikipedia article [Polygonum minimum](https://en.wikipedia.org/wiki/Polygonum_minimum) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Polygonum_minimum?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.