View source for Helianthus maximiliani

{{Treatment/ID
|accepted_name=Helianthus maximiliani
|accepted_authority=Schrader
|publications={{Treatment/Publication
|title=Index Seminum (Göttingen)
|place=1834: unpaged. 1835
|year=1835
}}
|common_names=Maximilian sunflower;hélianthe de Maximilien
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Helianthus dalyi
|authority=Britton
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Helianthus;Helianthus maximiliani
|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 Helianthinae]]</div><div class="higher-taxon"><small>genus</small>[[Helianthus]]</div><div class="higher-taxon"><small>species</small>[[Helianthus maximiliani]]</div></div>
|volume=Volume 21
|mention_page=page 141, 147, 165
|treatment_page=page 166
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 50–300 cm (rhizomatous). <b>Stems</b> erect, 5–30 dm, scabrous to scabro-hispidulous. <b>Leaves</b> cauline; mostly alternate; petioles 0–2 cm; blades (light green to gray-green, 1-nerved, conduplicate) lanceolate, 10–30 × 2–5.5 cm, bases cuneate, margins usually entire, sometimes serrulate, abaxial faces scabrous to scabro-hispid, gland-dotted. <b>Heads</b> (1–)3–15 (often in racemiform to spiciform arrays). <b>Peduncles</b> 1–11 cm. <b>Involucres</b> hemispheric, 13–28 mm diam. <b>Phyllaries</b> 30–40, lanceolate, 14–20 × 2–3 mm, (margins ciliate) apices acute to attenuate, abaxial faces canescent, gland-dotted. <b>Paleae</b> 7–11 mm, entire or 3-toothed (apices greenish, mucronate, hairy). <b>Ray</b> florets 10–25; laminae (15–)25–40 mm. <b>Disc</b> florets 75+; corollas 5–7 mm, lobes yellow; anthers dark brown or black; appendages usually yellow, sometimes partly dark. <b>Cypselae</b> 3–4 mm, glabrate; pappi of 2 aristate scales 3–4.1 mm. <b>2n</b> = 34.</span><!--

-->{{Treatment/Body
|phenology=Flowering late summer–fall.
|habitat=Prairies, fields, waste areas
|elevation=0–300(–2100+) m
|distribution=Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ala.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico.
|discussion=<p><i>Helianthus maximiliani</i> is introduced in eastern Ontario and in Quebec. It appears to be native to midcontinental prairie regions and has spread along railroads and highways into all areas of North America. Its wide dispersal may be aided by cultivation for its attractive, showy floral displays. In addition to the usually conduplicate, single-nerved leaves and spikelike arrangement of the heads, it is distinguished by the whitish-canescent indument of the leaves and stems and the long-attenuate phyllaries.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Helianthus maximiliani
|author=
|authority=Schrader
|rank=species
|parent rank=genus
|synonyms=Helianthus dalyi
|basionyms=
|family=Asteraceae
|phenology=Flowering late summer–fall.
|habitat=Prairies, fields, waste areas
|elevation=0–300(–2100+) m
|distribution=Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ala.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico.
|reference=None
|publication title=Index Seminum (Göttingen)
|publication year=1835
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_401.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae
|genus=Helianthus
|species=Helianthus maximiliani
}}<!--

-->[[Category:Treatment]][[Category:Helianthus]]