View source for Helenium amarum

{{Treatment/ID
|accepted_name=Helenium amarum
|accepted_authority=(Rafinesque) H. Rock
|publications={{Treatment/Publication
|title=Rhodora
|place=59: 131. 1957
|year=1957
}}
|common_names=Yellowdicks;fiveleaf sneezeweed
|basionyms={{Treatment/ID/Basionym
|name=Gaillardia amara
|authority=Rafinesque
|rank=species
|publication_title=Fl. Ludov.,
|publication_place=69. 1817 (as Galardia)
}}
|synonyms={{Treatment/ID/Synonym
|name=Helenium tenuifolium
|authority=Nuttall
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Gaillardiinae;Helenium;Helenium amarum
|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 Gaillardiinae]]</div><div class="higher-taxon"><small>genus</small>[[Helenium]]</div><div class="higher-taxon"><small>species</small>[[Helenium amarum]]</div></div>
|volume=Volume 21
|mention_page=page 427
|treatment_page=page 428
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 10–100 cm. <b>Stems</b> 1–3(–15), usually branched distally, not winged, glabrous or sparsely hairy. <b>Leaves</b> glabrous or sparsely hairy; basal blades linear to ovate, entire or pinnately toothed or lobed to pinnatifid; mid and distal blades linear, entire. <b>Heads</b> (1–)10–150(–250+) per plant, in paniculiform arrays. <b>Peduncles</b> 3–11 cm, sparsely hairy. <b>Involucres</b> hemispheric to globose or globoid, 5–9 × 6–10 mm. <b>Phyllaries</b> moderately to densely hairy. <b>Ray</b> florets 8–10, pistillate, fertile; corollas yellow, 4.5–14 × 2–10 mm. <b>Disc</b> florets 75–250+; corollas yellow proximally, yellow to yellow-brown or purple distally, 1.6–2.7 × 0.8–1.2 mm, lobes 5. <b>Cypselae</b> 0.7–1.3 mm, moderately to densely hairy; pappi of 6–8 entire, aristate scales 1–1.8 mm.</span><!--

-->{{Treatment/Body
|distribution=Ala.;Ark.;Calif.;D.C.;Fla.;Ga.;Ind.;Kans.;La.;Mich.;Miss.;Mo.;N.C.;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;n Mexico.
|discussion=<p>Varieties 2 (2 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Basal and proximal cauline leaves usually withered by flowering; basal blades usually entire or pinnately toothed, sometimes pinnatifid; proximal blades usually entire, sometimes pinnately toothed; disc corollas yellow to yellow-brown distally
|[[Helenium amarum var. amarum|Helenium amarum var. amarum]]
|-id=key-0-1
|1
|Basal and proximal cauline leaves often present at, sometimes withered by, flowering; basal blades pinnatifid; proximal blades entire or pinnately toothed or lobed to pinnatifid; disc corollas purple distally
|[[Helenium amarum var. badium|Helenium amarum var. badium]]
|}
</div></div><!--

-->{{#Taxon:
name=Helenium amarum
|authority=(Rafinesque) H. Rock
|rank=species
|parent rank=genus
|synonyms=Helenium tenuifolium
|basionyms=Gaillardia amara
|family=Asteraceae
|distribution=Ala.;Ark.;Calif.;D.C.;Fla.;Ga.;Ind.;Kans.;La.;Mich.;Miss.;Mo.;N.C.;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;n Mexico.
|reference=None
|publication title=Rhodora
|publication year=1957
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_1067.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae
|genus=Helenium
|species=Helenium amarum
}}<!--

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[[Category:Treatment]]
[[Category:Helenium]]
[[Category:Revision Pending]]