Persicaria microcephala

{{Short description|Species of plant}} {{Speciesbox |image=Persicaria microcephala kz3.jpg |image_caption=At the Missouri Botanical Garden |image2=Persicaria microcephala 'Red Dragon' at RHS Garden Hyde Hall, Essex, England.jpg |image2_caption='Red Dragon' cultivar at RHS Garden Hyde Hall |genus=Persicaria |species=microcephala |authority=(D.Don) H.Gross |synonyms_ref=<ref name="POWO_60455316-2" /> |synonyms={{Collapsible list| *''Ampelygonum microcephalum'' {{small|(D.Don) M.A.Hassan}} *''Persicaria sphaerocephala'' {{small|(Wall. ex Meisn.) H.Gross}} *''Polygonum ciliatum'' {{small|Buch.-Ham. ex D.Don}} *''Polygonum microcephalum'' {{small|D.Don}} *''Polygonum microcephalum'' var. ''sphaerocephalum'' {{small|(Wall. ex Meisn.) Murata}} *''Polygonum podocephalum'' {{small|Klotzsch}} *''Polygonum sphaerocephalum'' {{small|Wall. ex Meisn.}} *''Polygonum staticiflorum'' {{small|Wall.}} *''Polygonum wallichii'' {{small|Wight}} }}}}

'''''Persicaria microcephala''''' (syn. ''Polygonum microcephalum''), the '''small-headed knotweed''', is a species of flowering plant in the family Polygonaceae.<ref>{{cite web |url=https://www.rhs.org.uk/plants/78601/i-persicaria-microcephala-i/details |title=''Persicaria microcephala'' small-headed knotweed |publisher=Royal Horticultural Society |accessdate=14 May 2023 |quote=1 suppliers }}</ref> It is native to the Himalayas, and central and southern China, and it has been introduced to Great Britain.<ref name="POWO_60455316-2" >{{cite POWO |id=60455316-2 |title=''Persicaria microcephala'' (D.Don) H.Gross |access-date=14 May 2023 }}</ref> Its cultivar 'Red Dragon' has gained the Royal Horticultural Society's Award of Garden Merit.<ref>{{cite web |url=https://www.rhs.org.uk/plants/152665/persicaria-microcephala-red-dragon-pbr/details |title=''Persicaria microcephala'' 'Red Dragon'<sup>PBR</sup> knotweed 'Red Dragon' |publisher=Royal Horticultural Society |accessdate=14 May 2023 |quote=39 suppliers }}</ref>

==Subtaxa== The following varieties are accepted:<ref name="POWO_60455316-2" /> *''Persicaria microcephala'' var. ''microcephala'' *''Persicaria microcephala'' var. ''sphaerocephala'' {{small|(Wall. ex Meisn.) H.Hara}}

==References== {{Reflist}}

microcephala Category:Flora of the Indian subcontinent Category:Flora of Tibet Category:Flora of North-Central China Category:Flora of South-Central China Category:Flora of Southeast China Category:Plants described in 1913