View source for Fallopia dumetorum

{{Treatment/ID
|accepted_name=Fallopia dumetorum
|accepted_authority=(Linnaeus) Holub
|publications={{Treatment/Publication
|title=Folia Geobot. Phytotax.
|place=6: 176. 1971
|year=1971
}}
|common_names=Copse-bindweed;renouée des haies
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms={{Treatment/ID/Basionym
|name=Polygonum dumetorum
|authority=Linnaeus
|rank=species
|publication_title=Sp. Pl. ed.
|publication_place=2, 1: 522. 1762
}}
|synonyms={{Treatment/ID/Synonym
|name=Bilderdykia scandens var. dumetorum
|authority=(Linnaeus) Dumortier
|rank=variety
}} {{Treatment/ID/Synonym
|name=Polygonum scandens var. dumetorum
|authority=(Linnaeus) Gleason
|rank=variety
}} {{Treatment/ID/Synonym
|name=Reynoutria scandens var. dumetorum
|authority=(Linnaeus) Shinners
|rank=variety
}} {{Treatment/ID/Synonym
|name=Tiniaria dumetorum
|authority=(Linnaeus) Opiz
|rank=species
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Fallopia;Fallopia dumetorum
|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>[[Fallopia]]</div><div class="higher-taxon"><small>species</small>[[Fallopia dumetorum]]</div></div>
|volume=Volume 5
|mention_page=page 542, 545
|treatment_page=page 546
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, not rhizomatous, to 3 m. <b>Stems</b> scandent or climbing, rarely prostrate, freely branched, herbaceous, glabrous to papillose or scabrid, not glaucous. <b>Leaves</b>: ocrea usually deciduous, tan or brown, cylindric to funnelform, 1.5–3.5 mm, margins oblique, face not fringed with reflexed hairs and slender bristles at base, otherwise glabrous or scabrid; petiole 0.3–2.5 cm, glabrous or scabrid in lines; blade triangular to hastate, 2–8 × 1–5 cm, base cordate to truncate, margins wavy, scabrid, apex acute to acuminate, abaxially and adaxially faces glabrous or papillose to scabrid, not glaucous, the abaxial rarely minutely dotted. <b>Inflorescences</b> axillary, erect or spreading, racemelike, 2–20 cm, axes glabrous or scabrid; peduncle 0.1–6 cm or absent, glabrous or scabrid. <b>Pedicels</b> ascending or spreading to deflexed, articulated distally, 4–8 mm, glabrous. <b>Flowers</b> bisexual, 2–6 per ocreate fascicle; perianth accrescent in fruit, greenish white or pinkish, 3.5–7 mm including stipelike base, glabrous; tepals elliptic to obovate, apex obtuse to acute, outer 3 winged; stamens 8; filaments flattened proximally, pubescent proximally; styles connate; stigmas capitate. <b>Achenes</b> included, black, 2–4 × 1.8–2.4 mm, shiny, smooth; fruiting perianth glabrous, wings flat or, less often, undulate or crinkled, 1.5–2 mm wide, usually truncate or attenuate-decurrent on stipelike base nearly to articulation, margins entire or rarely undulate-crenate. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Oct.
|habitat=Hedges, wood borders, fields, waste ground
|elevation=0-300 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;La.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Europe;Asia.
|introduced=true
|discussion=<p>Because of similarity to <i>Fallopia scandens</i>, specimens of <i>F. dumetorum</i> often are misidentified. Consequently, the range of <i>F. dumetorum</i> in North America is unclear; it is probably exaggerated in most floras.</p><!--
--><p>Mature fruiting perianths provide the most reliable characters distinguishing <i>Fallopia dumetorum</i> from <i>F. scandens</i>. European specimens of <i>F. dumetorum</i>, have fruiting perianths that are consistently orbiculate in outline, with wings usually flat and abruptly contracted on the stipelike perianth bases. <i>Fallopia scandens</i> has fruiting perianths that are obovate in outline, with wings undulate and gradually decurrent on the stipelike perianth bases. Additional characteristics reported to distinguish <i>F. dumetorum</i> from <i>F. scandens</i> are its annual habit (<i>F. scandens</i> also is reported to be annual in some of the literature) and more triangular leaf blades with cordate or sagittate bases. In recognizing <i>F. dumetorum</i>, we follow S. T. Kim et al. (2000) and M. H. Kim et al. (2000), who concluded from limited morphological and flavonoid data that the taxa are best treated as distinct species. More detailed studies may prove the two to be conspecific.</p>
|tables=
|references=
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-->{{#Taxon:
name=Fallopia dumetorum
|authority=(Linnaeus) Holub
|rank=species
|parent rank=genus
|synonyms=Bilderdykia scandens var. dumetorum;Polygonum scandens var. dumetorum;Reynoutria scandens var. dumetorum;Tiniaria dumetorum
|basionyms=Polygonum dumetorum
|family=Polygonaceae
|phenology=Flowering Jul–Oct.
|habitat=Hedges, wood borders, fields, waste ground
|elevation=0-300 m
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;La.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Europe;Asia.
|introduced=true
|reference=None
|publication title=Folia Geobot. Phytotax.
|publication year=1971
|special status=Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_1116.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Fallopia
|species=Fallopia dumetorum
}}<!--

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[[Category:Treatment]]
[[Category:Fallopia]]
[[Category:Revised Since Print]]