View source for Persicaria arifolia

{{Treatment/ID
|accepted_name=Persicaria arifolia
|accepted_authority=(Linnaeus) Haraldson
|publications={{Treatment/Publication
|title=Acta Univ. Upsal., Symb. Bot. Upsal.
|place=22: 72. 1978
|year=1978
}}
|common_names=Halberd-leaf tearthumb;renouée à feuilles d’arum
|basionyms={{Treatment/ID/Synonym
|name=Polygonum arifolium
|authority=Linnaeus
}}
|synonyms={{Treatment/ID/Synonym
|name=Polygonum arifolium var. lentiforme
|authority=Fernald & Griscom
}}{{Treatment/ID/Synonym
|name=Polygonum arifolium var. pubescens
|authority=(R. Keller) Fernald
}}{{Treatment/ID/Synonym
|name=Polygonum sagittatum var. pubescens
|authority=R. Keller
}}{{Treatment/ID/Synonym
|name=Tracaulon arifolium
|authority=unknown
}}{{Treatment/ID/Synonym
|name=Truellum arifolium
|authority=unknown
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Persicaria;Persicaria sect. Echinocaulon;Persicaria arifolia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Polygonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Persicaria]]</div><div class="higher-taxon"><small>section</small>[[Persicaria sect. Echinocaulon]]</div><div class="higher-taxon"><small>species</small>[[Persicaria arifolia]]</div></div>
|volume=Volume 5
|mention_page=
|treatment_page=page 577
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual, 2–15 dm; roots also often arising from proximal nodes. <b>Stems</b> scandent, ribbed, glabrous; prickles 0.5–1 mm. <b>Leaves</b>: ocrea tan or brownish, cylindric, 8–15 mm, chartaceous, base inflated or not, with prickles, margins oblique, ciliate with bristles 0.5–2.5 mm, surface glabrous or appressed- to spreading-pubescent; petiole 1–7 cm; blade broadly hastate to hastate-cordate or triangular, (2–)6.5–13(–18) × (1–)6–11(–16) cm, base truncate to truncate-cordate, margins broadly hastate with lobes divergent, ciliate, sometimes also retrorsely prickly, apex acuminate, faces appressed-pubescent or, rarely, glabrous adaxially, stellate-pubescent or, rarely, glabrous abaxially, major veins often bearing prickles. <b>Inflorescences</b> capitate or paniclelike, uninterrupted, 5–12 × 3–8 mm; peduncle 10–80 mm, retrorsely prickly proximally, stellate-pubescent and stipitate-glandular distally, glands red or pink; ocreolae usually overlapping, sometimes not overlapping proximally, margins eciliate or ciliate with bristles to 0.5 mm. <b>Pedicels</b> mostly ascending, 2–3 mm. <b>Flowers</b> 2–4 per ocreate fascicle; perianth pink or red, often whitish green proximally, glabrous, accrescent, not becoming blue and fleshy in fruit; tepals 4, connate 1/3–1/2 their length, broadly elliptic, 5–6 mm, apex acute to obtuse; stamens (6–)8, filaments distinct, free; anthers pink, elliptic; styles 2, distinct. <b>Achenes</b> included, dark brown to black, biconvex, 3.5–6 × 3–4 mm, shiny, smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Oct.
|habitat=Shaded swamps, ponds, tidal marshes along rivers, wet ravines in forests
|elevation=0-600 m
|distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Persicaria arifolia
|author=
|authority=(Linnaeus) Haraldson
|rank=species
|parent rank=section
|synonyms=Polygonum arifolium var. lentiforme;Polygonum arifolium var. pubescens;Polygonum sagittatum var. pubescens;Tracaulon arifolium;Truellum arifolium
|basionyms=Polygonum arifolium
|family=Polygonaceae
|phenology=Flowering Jul–Oct.
|habitat=Shaded swamps, ponds, tidal marshes along rivers, wet ravines in forests
|elevation=0-600 m
|distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.
|reference=None
|publication title=Acta Univ. Upsal., Symb. Bot. Upsal.
|publication year=1978
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V5/V5_1180.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Persicaria
|section=Persicaria sect. Echinocaulon
|species=Persicaria arifolia
}}<!--

-->[[Category:Treatment]][[Category:Persicaria sect. Echinocaulon]]