View source for Amaranthus cannabinus

{{Treatment/ID
|accepted_name=Amaranthus cannabinus
|accepted_authority=(Linnaeus) J. D. Sauer
|publications={{Treatment/Publication
|title=Madroño
|place=13: 11. 1955
|year=1955
}}
|common_names=Salt-marsh water-hemp;tidal-marsh water-hemp;water-hemp pigweed
|basionyms={{Treatment/ID/Basionym
|name=Acnida cannabina
|authority=Linnaeus
|publication_title=Sp. Pl.
|publication_place=2: 1027. 1753
}}
|synonyms=
|hierarchy=Amaranthaceae;Amaranthus;Amaranthus subg. Acnida;Amaranthus sect. Acnida;Amaranthus cannabinus
|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. Acnida]]</div><div class="higher-taxon"><small>section</small>[[Amaranthus sect. Acnida]]</div><div class="higher-taxon"><small>species</small>[[Amaranthus cannabinus]]</div></div>
|volume=Volume 4
|mention_page=page 412
|treatment_page=page 416
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>erect, branched, stout, usually 1–3 m. <b>Leaves</b>: petiole 1/2 length of blade; blade lanceolate or narrowly lanceolate to linear, to 20 × 4 cm, base narrowly cuneate, margins entire, plane to slightly undulate, apex acute to acuminate. <b>Inflorescences</b> mostly terminal, narrow spikes or thyrses, usually interrupted, linear. <b>Bracts</b>: of pistillate flowers 1.5 mm; of staminate flowers with midribs not prominent, scarcely excurrent, shorter than 1 mm. <b>Pistillate</b> flowers: tepals absent or 1–2 and rudimentary; style branches ± erect; stigmas 3–5. <b>Staminate</b> flowers: tepals 5, without prominent midribs, equal, 2.5–3 mm, apex obtuse to indistinctly mucronulate in outer tepals; stamens 3–5. <b>Utricles</b> often black, with 3(–5) longitudinal ridges corresponding to 3–5 style branches, ovoid or obovoid, 2.5–4 mm (exceeding tepals, when present), somewhat fleshy, smooth (slightly rugose, especially in herbarium specimens). <b>Seeds</b> reddish brown to dark brown, 2–3 mm diam., shiny.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Coastal salt or brackish marshes, edges of sloughs, tidal riverbanks, tidal flats, rarely freshwater semiaquatic habitats
|elevation=0-50 m
|distribution=Ala.;Conn.;Del.;D.C.;Fla.;Ga.;Maine;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Vt.;Va.
|discussion=<p>Reports of <i>Amaranthus cannabinus</i> from southern Florida and the Gulf Coastal Plain are the result of misidentifications of <i>A. australis</i>. According to J. D. Sauer (1955), plants of <i>A. cannabinus</i> from northern coastal Atlantic Florida are atypical and probably represent hybrid populations transitional toward <i>A. australis</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Amaranthus cannabinus
|author=
|authority=(Linnaeus) J. D. Sauer
|rank=species
|parent rank=section
|synonyms=
|basionyms=Acnida cannabina
|family=Amaranthaceae
|phenology=Flowering summer–fall.
|habitat=Coastal salt or brackish marshes, edges of sloughs, tidal riverbanks, tidal flats, rarely freshwater semiaquatic habitats
|elevation=0-50 m
|distribution=Ala.;Conn.;Del.;D.C.;Fla.;Ga.;Maine;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Vt.;Va.
|reference=None
|publication title=Madroño
|publication year=1955
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V4/V4_811.xml
|genus=Amaranthus
|subgenus=Amaranthus subg. Acnida
|section=Amaranthus sect. Acnida
|species=Amaranthus cannabinus
}}<!--

-->[[Category:Treatment]][[Category:Amaranthus sect. Acnida]]