View source for Amaranthus albus

{{Treatment/ID
|accepted_name=Amaranthus albus
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Syst. Nat. ed.
|place=10, 2: 1268. 1759
|year=1759
}}
|common_names=Tumbleweed amaranth;tumble pigweed;white amaranth
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Amaranthus albus var. pubescens
|authority=(Uline & W. L. Bray) Fernald
|rank=variety
}} {{Treatment/ID/Synonym
|name=Amaranthus pubescens
|authority=
|rank=species
}}
|hierarchy=Amaranthaceae;Amaranthus;Amaranthus subg. Albersia;Amaranthus albus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Amaranthaceae]]</div><div class="higher-taxon"><small>genus</small>[[Amaranthus]]</div><div class="higher-taxon"><small>subgenus</small>[[Amaranthus subg. Albersia]]</div><div class="higher-taxon"><small>species</small>[[Amaranthus albus]]</div></div>
|volume=Volume 4
|mention_page=page 413, 428, 434, 435
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual, glabrous or glabrescent or viscid-pubescent. <b>Stems</b> usually erect, ascending proximally, rarely almost prostrate, much-branched, bushy (large plants forming tumbleweeds), 0.1–1 m. <b>Leaves</b>: petiole 1/2 as long as blade, or longer in young proximal leaves; blade obovate to narrowly spatulate, mostly 0.5 × 0.5–1.5 cm, early proximal leaves to 8 cm, base tapering, narrowly cuneate, margins entire, plane (or ± distinctly undulate), apex obtuse, with whitish or yellowish, subspinescent mucro. <b>Inflorescences</b> axillary glomerules, green, whitish green, or yellowish. <b>Bracts</b> of pistillate flowers subulate to linear-lanceolate, narrow, 2–3 mm, 2 times as long as tepals. <b>Pistillate</b> flowers: tepals 3, narrowly ovate to linear, slightly unequal, 1–1.5 mm, thin, apex acute; style branches erect; stigmas 3. <b>Staminate</b> flowers intermixed with pistillate; tepals 3; stamens 3. <b>Utricles</b> ellipsoid-ovoid, 1.5 mm, equaling or exceeding tepals, smooth proximally, coarsely rugose distally, dehiscence regularly circumscissile. <b>Seeds</b> dark reddish brown to black, lenticular, 0.6–1 mm diam., shiny.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Disturbed habitats, waste places, vacant areas, railroads, streambanks, sandy areas, roadsides, agricultural fields
|elevation=0-2200 m
|distribution=St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;introduced and often successfully naturalized in South America;Eurasia;Africa;Australia.
|introduced=true
|discussion=<p>The name <i>Amaranthus graecizans</i>, which refers to a species of Old World origin, has been misapplied to both <i>A. albus</i> and <i>A. blitoides</i> in earlier North American floras and manuals.</p><!--
--><p>Southwestern plants differing from typical <i>Amaranthus albus</i> in having viscid pubescence and usually distinctly crisped leaf margins may be recognized as <i></i>var.<i> pubescens</i>; they were occasionally treated as a separate species, <i>A. pubescens</i>.</p><!--
--><p><i>Amaranthus albus</i> and <i>A. blitoides</i> are rather often confused in herbaria. The species are easily distinguished by their seed size and luster.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Amaranthus albus
|authority=Linnaeus
|rank=species
|parent rank=subgenus
|synonyms=Amaranthus albus var. pubescens;Amaranthus pubescens
|basionyms=
|family=Amaranthaceae
|phenology=Flowering summer–fall.
|habitat=Disturbed habitats, waste places, vacant areas, railroads, streambanks, sandy areas, roadsides, agricultural fields
|elevation=0-2200 m
|distribution=St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;introduced and often successfully naturalized in South America;Eurasia;Africa;Australia.
|introduced=true
|reference=None
|publication title=Syst. Nat. ed.
|publication year=1759
|special status=Weedy;Introduced;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V4/V4_852.xml
|genus=Amaranthus
|subgenus=Amaranthus subg. Albersia
|species=Amaranthus albus
}}<!--

-->[[Category:Treatment]][[Category:Amaranthus subg. Albersia]]