View source for Helianthus radula

{{Treatment/ID
|accepted_name=Helianthus radula
|accepted_authority=(Pursh) Torrey & A. Gray
|publications={{Treatment/Publication
|title=Fl. N. Amer.
|place=2: 321. 1842
|year=1842
}}
|common_names=Rayless or pineland sunflower
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Rudbeckia radula
|authority=Pursh
|rank=species
|publication_title=Fl. Amer. Sept.
|publication_place=2: 575. 1813
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Helianthus;Helianthus radula
|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 radula]]</div></div>
|volume=Volume 21
|mention_page=page 141, 143
|treatment_page=page 155
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 50–100 cm (with crown buds). <b>Stems</b> erect, distally densely hispid. <b>Leaves</b> mostly basal; opposite; petioles obscure (intergrading with blades); blades obovate to orbiculate, 4.6–14.5 × 2.1–12 cm, bases broadly cuneate to rounded, margins entire or serrulate, abaxial faces strigoso-hispid, not gland-dotted (cauline usually much smaller, alternate distally). <b>Heads</b> usually borne singly. <b>Peduncles</b> 10–20 cm. <b>Involucres</b> shallowly hemispheric, (15–25 ×) 5–8 mm. <b>Phyllaries</b> (often dark purple) 25–33, lanceolate to ovate, 10–14 × 3–5 mm, apices acute to acuminate, abaxial faces hispid or glabrous. <b>Paleae</b> 9–10 mm, subentire to 3-toothed (apices purplish, mucronate). <b>Ray</b> florets 0 or 2–8; laminae (sometimes purplish) 1–2(–10) mm. <b>Disc</b> florets 100–150+; corollas 7–8 mm, lobes reddish; anthers dark, appendages dark. <b>Cypselae</b> 3–4 mm, glabrate; pappi of 2 (often unequal) aristate scales 0.5–2.9 mm. <b>2n</b> = 34.</span><!--

-->{{Treatment/Body
|phenology=Flowering fall.
|habitat=Sandy, open pine barrens, flatwoods
|elevation=0–50+ m
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Helianthus radula
|authority=(Pursh) Torrey & A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Rudbeckia radula
|family=Asteraceae
|phenology=Flowering fall.
|habitat=Sandy, open pine barrens, flatwoods
|elevation=0–50+ m
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.
|reference=None
|publication title=Fl. N. Amer.
|publication year=1842
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_369.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae
|genus=Helianthus
|species=Helianthus radula
}}<!--

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