View source for Amaranthus obcordatus

{{Treatment/ID
|accepted_name=Amaranthus obcordatus
|accepted_authority=(A. Gray) Standley in N. L. Britton et al.
|publications={{Treatment/Publication
|title=in N. L. Britton et al., N. Amer. Fl.
|place=21: 107. 1917
|year=1917
}}
|common_names=Trans-Pecos amaranth
|basionyms={{Treatment/ID/Synonym
|name=Amblogyna urceolata var. obcordata
|authority=A. Gray
}}
|synonyms=
|hierarchy=Amaranthaceae;Amaranthus;Amaranthus subg. Amaranthus;Amaranthus obcordatus
|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. Amaranthus]]</div><div class="higher-taxon"><small>species</small>[[Amaranthus obcordatus]]</div></div>
|volume=Volume 4
|mention_page=page 414, 420
|treatment_page=page 427
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>glabrous. <b>Stems</b> erect or ascending, branched, 0.1–0.5 m. <b>Leaves</b>: petiole 1/2 as long as blade; blade oblong-lanceolate to lanceolate-linear, 1–3 × 0.2–1 cm, base cuneate to narrowly cuneate, margins entire, plane or sometimes undulate, apex rounded or obtuse-truncate, mucronate. <b>Inflorescences</b> mostly axillary, but at apex flowers also condensed in terminal spikes or spicate panicles, usually leafy proximally or nearly leafless distally. <b>Bracts</b> broadly ovate, 1 mm or shorter, 1/2 or less length of tepals, apex acute. <b>Pistillate</b> flowers: tepals 5, spreading at maturity, spatulate, clawed, subequal, 2 mm, margins fimbriate, apex rounded or shallowly emarginate; stigmas 3. <b>Staminate</b> flowers: tepals (3–)5; stamens 3. <b>Utricles</b> narrowly oblong, 1–1.4 mm, shorter than tepals, indehiscent. <b>Seeds</b> dark reddish brown to nearly black, lenticular or broadly lenticular, 0.6–0.8 mm diam., smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Semideserts, naturally disturbed habitats
|elevation=1000-1200 m
|distribution=Ariz.;Tex.;n Mexico (Sinaloa;Sonora).
|discussion=<p><i>Amaranthus obcordatus</i> has been reported only from southern Arizona (T. H. Kearney and R. H. Peebles 1960), trans-Pecos Texas in Brewster and Pecos counties, and adjacent regions of Mexico (C. F. Reed 1969b). It was also tentatively reported for New Mexico, but no localities were cited (W. C. Martin and C. R. Hutchins 1980). The proper taxonomic position of <i>A. obcordatus</i> and its relationships to other species remain problematic and are in need of further study.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Amaranthus obcordatus
|author=
|authority=(A. Gray) Standley in N. L. Britton et al.
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=Amblogyna urceolata var. obcordata
|family=Amaranthaceae
|phenology=Flowering summer–fall.
|habitat=Semideserts, naturally disturbed habitats
|elevation=1000-1200 m
|distribution=Ariz.;Tex.;n Mexico (Sinaloa;Sonora).
|reference=None
|publication title=in N. L. Britton et al., N. Amer. Fl.
|publication year=1917
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V4/V4_834.xml
|genus=Amaranthus
|subgenus=Amaranthus subg. Amaranthus
|species=Amaranthus obcordatus
}}<!--

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