View source for Chenopodium urbicum

{{Treatment/ID
|accepted_name=Chenopodium urbicum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 218. 1753
|year=1753
}}
|common_names=City goosefoot
|basionyms=
|synonyms=
|hierarchy=Chenopodiaceae;Chenopodium;Chenopodium subg. Chenopodium;Chenopodium sect. Chenopodium;Chenopodium subsect. Urbica;Chenopodium urbicum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Chenopodiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Chenopodium]]</div><div class="higher-taxon"><small>subgenus</small>[[Chenopodium subg. Chenopodium]]</div><div class="higher-taxon"><small>section</small>[[Chenopodium sect. Chenopodium]]</div><div class="higher-taxon"><small>subsection</small>[[Chenopodium subsect. Urbica]]</div><div class="higher-taxon"><small>species</small>[[Chenopodium urbicum]]</div></div>
|volume=Volume 4
|mention_page=page 287
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>erect, simple or rarely branched, 3–10 dm, glabrous. <b>Leaves</b> nonaromatic; petiole 1.5–3.5 cm; blade mostly triangular or rhombic in proximal leaves, triangular, rhombic, or lanceolate in distal leaves, 3–11 × 3–10 cm, base truncate to broadly cuneate, margins sinuate to dentate (occasionally ± entire), often with obtuse to acute outward-pointing lobes at base, apex obtuse to acute, glabrous. <b>Inflorescences</b> glomerules in terminal panicles and lateral spikes or compound spikes, 3–4.5(–8) cm; glomerules subglobose, 2–3.5 mm diam.; bracts absent. <b>Flowers</b>: perianth segments 5, distinct nearly to base; lobes broadly ovate to elliptic, 0.6–0.8 × 0.4–0.8 mm, apex obtuse or retuse, rounded or with slight broad keel abaxially, glabrous, only slightly covering fruit at maturity; stamens 5; stigmas 2, 0.1 mm. <b>Utricles</b> depressed-ovoid; pericarp nonadherent, papillose to smooth. <b>Seeds</b> rarely few vertical, lenticular, round, 0.8–1.2 mm diam.; seed coat black (reddish brown), shiny.</span><!--

-->{{Treatment/Body
|phenology=Fruiting late summer–fall.
|habitat=Waste places, especially about cities and towns, along railroad tracks
|elevation=0-600 m
|distribution=N.S.;Ont.;Que.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;Vt.;W.Va.;Wis.;native to Europe;Asia;occasionally introduced in other parts of the world.
|discussion=<p>Judging from its leaf morphology and anatomy, inflorescence structure, and floral characteristics, <i>Chenopodium urbicum</i> probably should be transferred to subg. Blitum, where it would occupy a position transitional toward subg. <i>Chenopodium</i>. Two rather distinct varieties are usually recognized: var. urbicum (= C. deltoideum Lamarck) with triangular leaf blades truncate at base, and <i></i>var.<i> intermedium</i> (Mertens & Koch) Koch [= var. rhombifolium (Muhlenberg ex Willdenow) Moquin-Tandon] with rhombic leaf blades cuneate at base. Both entities occur in North America.</p><!--
--><p><i>Chenopodium urbicum</i> has been reported from several other provinces and states including British Columbia, New Brunswick, Louisiana, Oregon, and Washington. We have not been able to verify these locations.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chenopodium urbicum
|authority=Linnaeus
|rank=species
|parent rank=subsection
|synonyms=
|basionyms=
|family=Chenopodiaceae
|phenology=Fruiting late summer–fall.
|habitat=Waste places, especially about cities and towns, along railroad tracks
|elevation=0-600 m
|distribution=N.S.;Ont.;Que.;Conn.;Del.;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;Vt.;W.Va.;Wis.;native to Europe;Asia;occasionally introduced in other parts of the world.
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_535.xml
|genus=Chenopodium
|subgenus=Chenopodium subg. Chenopodium
|section=Chenopodium sect. Chenopodium
|subsection=Chenopodium subsect. Urbica
|species=Chenopodium urbicum
}}<!--

-->[[Category:Treatment]][[Category:Chenopodium subsect. Urbica]]