View source for Flaveria trinervia

{{Treatment/ID
|accepted_name=Flaveria trinervia
|accepted_authority=(Sprengel) C. Mohr
|publications={{Treatment/Publication
|title=Contr. U.S. Natl. Herb.
|place=6: 810. 1901
|year=1901
}}
|common_names=Clustered yellowtops
|basionyms={{Treatment/ID/Basionym
|name=Odera trinervia
|authority=Sprengel
|rank=species
|publication_title=Bot. Gart. Halle,
|publication_place=63. 1800
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Flaveriinae;Flaveria;Flaveria trinervia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Flaveriinae]]</div><div class="higher-taxon"><small>genus</small>[[Flaveria]]</div><div class="higher-taxon"><small>species</small>[[Flaveria trinervia]]</div></div>
|volume=Volume 21
|mention_page=page 247
|treatment_page=page 250
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> to 200+ cm (delicate or robust, glabrate or glabrous). <b>Stems</b> erect. <b>Leaves</b> petiolate (proximal, petioles 10–20 mm) or sessile (distal); blades lanceolate or oblanceolate to elliptic or subovate, 30–150 × (7–)10–40 mm, bases (distal) connate, margins serrate, serrate-dentate, or spinulose-serrate. <b>Heads</b> 30–300+, in tight, axillary, sessile glomerules (receptacles of glomerules setose). <b>Calyculi</b> 0. <b>Involucres</b> oblong and cylindric or angular, 3.8–4.5 mm. <b>Phyllaries</b> usually 2, oblong (closely investing and falling with mature cypselae). <b>Ray</b> florets 0–1; laminae pale yellow or whitish, oblique or suborbiculate, 0.5–1 mm. <b>Disc</b> florets 0–1(–2); corolla tubes 0.5–1.4 mm, throats campanulate, 0.5–0.8 mm. <b>Cypselae</b> oblanceoloid to subclavate, 2–2.6 mm (rays longer); pappi 0. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering Mar–Dec.
|habitat=Near water, saline and gypseous areas
|elevation=0–1900 m
|distribution=Ariz.;Calif.;Fla.;Mass.;Mo.;N.Mex.;Tex.;Va.;West Indies;Central America (British Honduras);South America (Brazil;Ecuador;Peru;Venezuela);probably introduced in Asia (India;Middle East);Africa;Pacific Islands (Hawaii).
|discussion=<p><i>Flaveria trinervia</i> is widespread and weedy; it often occurs in saline, gypseous, disturbed areas near permanent or ephemeral water sources in southern Florida and from Texas to southern California. It occurs also in scattered locations in some eastern states and has been reported from Alabama.</p><!--
--><p>The heads of <i>Flaveria trinervia</i>, which usually contain just one floret, are either radiate or discoid; radiate heads tend to occur on the periphery of setose glomerules. Reduction of some of the floral features, including number of florets [0–1(–2)], phyllaries per head (2), and size of ray laminae, suggest that <i>F. trinervia</i> may be the most derived species in the genus.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Flaveria trinervia
|authority=(Sprengel) C. Mohr
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Odera trinervia
|family=Asteraceae
|phenology=Flowering Mar–Dec.
|habitat=Near water, saline and gypseous areas
|elevation=0–1900 m
|distribution=Ariz.;Calif.;Fla.;Mass.;Mo.;N.Mex.;Tex.;Va.;West Indies;Central America (British Honduras);South America (Brazil;Ecuador;Peru;Venezuela);probably introduced in Asia (India;Middle East);Africa;Pacific Islands (Hawaii).
|reference=None
|publication title=Contr. U.S. Natl. Herb.
|publication year=1901
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_619.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Flaveriinae
|genus=Flaveria
|species=Flaveria trinervia
}}<!--

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