View source for Froelichia gracilis

{{Treatment/ID
|accepted_name=Froelichia gracilis
|accepted_authority=(Hooker) Moquin-Tandon
|publications={{Treatment/Publication
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|place=13(2): 420. 1849
|year=1849
}}
|common_names=Slender cottonweed
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Oplotheca gracilis
|authority=Hooker
|rank=species
|publication_title=Icon Pl.
|publication_place=3: plate 256. 1840
}} {{Treatment/ID/Basionym
|name=Froelichia texana
|authority=(A. Braun) Small 1903
|rank=species
|publication_title=
|publication_place=
}}
|synonyms={{Treatment/ID/Synonym
|name=Froelichia braunii
|authority=Standley
|rank=species
}} {{Treatment/ID/Synonym
|name=Oplotheca texana
|authority=A. Braun
|rank=species
}}
|hierarchy=Amaranthaceae;Froelichia;Froelichia gracilis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Amaranthaceae]]</div><div class="higher-taxon"><small>genus</small>[[Froelichia]]</div><div class="higher-taxon"><small>species</small>[[Froelichia gracilis]]</div></div>
|volume=Volume 4
|mention_page=page 442, 444
|treatment_page=page 445
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual or short-lived perennial; taproots narrow, enlarged when perennial, semiwoody. <b>Stems</b> several (rarely 1), erect or ascending, sometimes procumbent, usually much-branched from base, slender, 1–5(–10) dm, densely or sparsely villous-tomentose with grayish white hairs. <b>Leaves</b> predominant on proximal 1/3 of plant, often basal, sessile; blade linear to lanceolate or lance-elliptic, largest leaves 1.6–9(–13.5) × 0.2–0.9(–1.2) cm, base acuminate or attenuate, apex acute to acuminate, canescent or sericeous adaxially, sericeous-tomentose with white or gray hairs abaxially. <b>Spikes</b> sparsely branched, flowers arranged in 3-ranked spiral; bracteoles stramineous or blackish, glabrous. <b>Flowers</b> 2.4–3.8 mm; perianth lobes oblong-linear, apex acute or acutish, pubescence grayish; filament lobes stramineous or blackish, blunt. <b>Utricles</b> 2.5–5 × 2.7–4 mm, apex slightly oblique, with irregularly and deeply cut (“spiny”) lateral wings, both surfaces of perianth with distinct spines or tubercles. <b>2n</b> = 54.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer in north, year-round in extreme south.
|habitat=Open plains, rocky hillsides, roadsides, waste ground, railroad ballast
|distribution=Ont.;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Md.;Mass.;Mich.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Wis.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas);introduced in Europe;Asia (Japan).
|discussion=<p>The current range of <i>Froelichia gracilis</i> is due in large part to its introduction via railroads during the past 100 years, and the majority of records for the species east of the Mississippi River occur on or near railroads. S. F. Blake (1956) discussed this eastern spread of the species. <i>Froelichia gracilis</i> is considered a minor invasive weed in the Northeast; its adaptation to open sandy or gravely soils will restrict its spread to open sites with poor soil.</p><!--
--><p>In regions where their ranges overlap, <i>Froelichia gracilis</i> may hybridize with <i>F. floridana</i>. Plants with intermediate form from Texas and the Midwest have been noted. Suspected hybrids appear closest in habit to <i>F. gracilis</i> and will generally key to that species. Floral structure will be intermediate and variable; the branching will be typically less than in <i>F. gracilis</i> and present distal to the base.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Froelichia gracilis
|authority=(Hooker) Moquin-Tandon
|rank=species
|parent rank=genus
|synonyms=Froelichia braunii;Oplotheca texana
|basionyms=Oplotheca gracilis;Froelichia texana
|family=Amaranthaceae
|phenology=Flowering summer in north, year-round in extreme south.
|habitat=Open plains, rocky hillsides, roadsides, waste ground, railroad ballast
|distribution=Ont.;Ala.;Ariz.;Ark.;Calif.;Colo.;Conn.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Md.;Mass.;Mich.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Wis.;Mexico (Chihuahua;Coahuila;Nuevo León;Tamaulipas);introduced in Europe;Asia (Japan).
|reference=None
|publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|publication year=1849
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V4/V4_874.xml
|genus=Froelichia
|species=Froelichia gracilis
}}<!--

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