View source for Chenopodium macrospermum

{{Treatment/ID
|accepted_name=Chenopodium macrospermum
|accepted_authority=Hooker f.
|publications={{Treatment/Publication
|title=Fl. Antarct.
|place=2: 341. 1846
|year=1846
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Chenopodium farinosum
|authority=Standley
|rank=species
}} {{Treatment/ID/Synonym
|name=Chenopodium murale var. farinosum
|authority=S. Watson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Chenopodium macrospermum var. halophilum
|authority=(Philippi) Aellen
|rank=variety
}}
|hierarchy=Chenopodiaceae;Chenopodium;Chenopodium subg. Blitum;Chenopodium sect. Degenia;Chenopodium macrospermum
|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. Blitum]]</div><div class="higher-taxon"><small>section</small>[[Chenopodium sect. Degenia]]</div><div class="higher-taxon"><small>species</small>[[Chenopodium macrospermum]]</div></div>
|volume=Volume 4
|mention_page=page 276
|treatment_page=page 281
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>erect to decumbent, branched from base, 1–6 dm, farinose. <b>Leaves</b> nonaromatic; petiole 0.01–0.25 cm; blade deltate or trullate to narrowly trullate, rarely lanceolate, 0.8–6 × 0.4–3.6 cm, base cuneate, margins serrate, apex acute. <b>Inflorescences</b> glomerules in terminal dense spikes; glomerules subglobose, 3–5 mm diam.; bracts absent. <b>Flowers</b>: perianth segments connate into 0.5 mm tube; lobes deltate, 0.2–0.3 × 0.7–0.8 mm, apex acute, not keeled, glabrous, covering fruit at maturity; stamen 1; stigmas 2. <b>Achenes</b> ovoid; pericarp adherent, smooth. <b>Seeds</b> ovoid, 0.9–1.1 mm diam., margins rounded; seed coat black, reticulate-punctate. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|phenology=Fruiting Jun–Sep.
|habitat=Beach, dry lake and creek beds, marshes and muddy areas, waste areas
|elevation=0-10 m
|distribution=B.C.;Calif.;N.C.;Wash.;South America (Argentina;Bolivia;Paraguay).
|discussion=<p><i>Chenopodium macrospermum</i> is native and diverse in South America. Much, if not all, of the North American material is introduced from there and appears to represent more than one part of the variation. Until a reliable treatment of the South American material is published we are not assigning names to the variants in North America.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Chenopodium macrospermum
|authority=Hooker f.
|rank=species
|parent rank=section
|synonyms=Chenopodium farinosum;Chenopodium murale var. farinosum;Chenopodium macrospermum var. halophilum
|basionyms=
|family=Chenopodiaceae
|phenology=Fruiting Jun–Sep.
|habitat=Beach, dry lake and creek beds, marshes and muddy areas, waste areas
|elevation=0-10 m
|distribution=B.C.;Calif.;N.C.;Wash.;South America (Argentina;Bolivia;Paraguay).
|introduced=true
|reference=None
|publication title=Fl. Antarct.
|publication year=1846
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_516.xml
|genus=Chenopodium
|subgenus=Chenopodium subg. Blitum
|section=Chenopodium sect. Degenia
|species=Chenopodium macrospermum
}}<!--

-->[[Category:Treatment]][[Category:Chenopodium sect. Degenia]]