View source for Helianthus resinosus

{{Treatment/ID
|accepted_name=Helianthus resinosus
|accepted_authority=Small
|publications={{Treatment/Publication
|title=Fl. S.E. U.S.,
|place=1269, 1340. 1903
|year=1903
}}
|common_names=Resindot sunflower
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Helianthus;Helianthus resinosus
|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 resinosus]]</div></div>
|volume=Volume 21
|mention_page=page 146
|treatment_page=page 162
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole-organism some measurement;whole-organism duration"><b>Perennials,</b> 100–300 cm (rhizomatous).</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem pubescence;stem pubescence"><b>Stems </b>(often reddish or purplish) erect, hirsute or villous.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position"><b>Leaves </b>mostly cauline;</span> <span class="statement" id="st-d0_s3" data-properties="leaf arrangement">mostly alternate;</span> <span class="statement" id="st-d0_s4" data-properties="petiole some measurement">petioles 0.5–2 cm (broadly winged);</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade length;blade width;base shape;margin architecture or shape;margin architecture or shape;abaxial face pubescence">blades lanceolate to ovate, 6.5–20 × 3.2–9 cm, bases gradually narrowed (onto petioles), margins entire or serrate, abaxial faces hirsute to tomentose, glanddotted.</span> <span class="statement" id="st-d0_s6" data-properties="head quantity"><b>Heads </b>1–5.</span> <span class="statement" id="st-d0_s7" data-properties="peduncle some measurement"><b>Peduncles </b>1–3 cm.</span> <span class="statement" id="st-d0_s8" data-properties="involucre shape;involucre diameter"><b>Involucres </b>hemispheric, 15–27 mm diam.</span> <span class="statement" id="st-d0_s9" data-properties="phyllary quantity;phyllary shape;phyllary length;phyllary width;apex shape;abaxial face pubescence"><b>Phyllaries </b>20–30 (squarrose to reflexed, at least tips), lanceolate, 10–21 × 3–5 mm (notably surpassing discs), apices acute to attenuate, abaxial faces hispid to villous, densely glanddotted (at least toward apices).</span> <span class="statement" id="st-d0_s10" data-properties="palea some measurement;palea shape"><b>Paleae </b>9–11 mm, 3-toothed (glanddotted).</span> <span class="statement" id="st-d0_s11" data-properties="ray-floret quantity"><b>Ray-</b>florets 10–20;</span> <span class="statement" id="st-d0_s12" data-properties="lamina some measurement">laminae (often light yellow) 18–30 mm.</span> <span class="statement" id="st-d0_s13" data-properties="disc-floret quantity"><b>Disc-</b>florets 90+;</span> <span class="statement" id="st-d0_s14" data-properties="corolla some measurement;lobe coloration">corollas 8–8.5 mm, lobes yellow;</span> <span class="statement" id="st-d0_s15" data-properties="anther coloration;appendage coloration">anthers dark, appendages dark.</span> <span class="statement" id="st-d0_s16" data-properties="cypsela some measurement;cypsela pubescence"><b>Cypselae </b>5–7 mm, glabrate;</span> <span class="statement" id="st-d0_s17" data-properties="scale quantity;scale shape;scale some measurement;2n chromosome quantity">pappi of 2 aristate scales 2.4–2.6 mm. <b>2n</b> = 102.</span><!--

-->{{Treatment/Body
|phenology=Flowering late summer–fall.
|habitat=Roadsides, open areas
|elevation=0–900+ m
|distribution=Ala.;Fla.;Ga.;Miss.;N.C.;S.C.
|discussion=<p>Consistent with its epithet, Helianthus resinosus has abundant subsessile glandular hairs (“resin dots”) on its leaves, phyllaries, paleae, and ray laminae. It intergrades and has been reported to hybridize with H. tuberosus. It is cultivated and usually sold under the long-misapplied name H. tomentosus Michaux.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Helianthus resinosus
|authority=Small
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering late summer–fall.
|habitat=Roadsides, open areas
|elevation=0–900+ m
|distribution=Ala.;Fla.;Ga.;Miss.;N.C.;S.C.
|reference=None
|publication title=Fl. S.E. U.S.,
|publication year=1903
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_390.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae
|genus=Helianthus
|species=Helianthus resinosus
|2n chromosome quantity=102
|abaxial face pubescence=hispid;villous
|anther coloration=dark
|apex shape=acute;attenuate
|appendage coloration=dark
|base shape=narrowed
|blade length=6.5cm;20cm
|blade shape=lanceolate;ovate
|blade width=3.2cm;9cm
|corolla some measurement=8mm;8.5mm
|cypsela pubescence=glabrate
|cypsela some measurement=5mm;7mm
|head quantity=1;5
|involucre diameter=15mm;27mm
|involucre shape=hemispheric
|lamina some measurement=18mm;30mm
|leaf arrangement=alternate
|leaf position=cauline
|lobe coloration=yellow
|margin architecture or shape=serrate;entire
|palea shape=3-toothed
|palea some measurement=9mm;11mm
|peduncle some measurement=1cm;3cm
|petiole some measurement=0.5cm;2cm
|phyllary length=10mm;21mm
|phyllary quantity=20;30
|phyllary shape=lanceolate
|phyllary width=3mm;5mm
|ray-floret quantity=10;20
|scale quantity=2
|scale shape=aristate
|scale some measurement=2.4mm;2.6mm
|stem orientation=erect
|stem pubescence=villous;hirsute
|whole-organism duration=perennial
|whole-organism some measurement=100cm;300cm
}}<!--

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