View source for Rudbeckia triloba

{{Treatment/ID
|accepted_name=Rudbeckia triloba
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 907. 1753
|year=1753
}}
|common_names=Brown-eyed Susan
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae;Rudbeckia;Rudbeckia sect. Rudbeckia;Rudbeckia triloba
|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 Rudbeckiinae]]</div><div class="higher-taxon"><small>genus</small>[[Rudbeckia]]</div><div class="higher-taxon"><small>section</small>[[Rudbeckia sect. Rudbeckia]]</div><div class="higher-taxon"><small>species</small>[[Rudbeckia triloba]]</div></div>
|volume=Volume 21
|mention_page=page 53
|treatment_page=page 59
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> to 150 cm (rhizomatous). <b>Stems</b> glabrate to hirsute or strigose (hairs 1–2 mm, basal retrorse, others spreading). <b>Leaves</b>: blades ovate to subcordate or elliptic (not lobed), margins serrate, apices acute to acuminate, faces hirsute to strigose; basal petiolate, 10–30 × 2–8 cm, bases truncate or rounded to cordate; cauline petiolate or sessile, ovate to elliptic, proximal usually 3–5-lobed, 2–20 × 1.5–8 cm (smaller, fewer lobed distally), bases rounded to attenuate, sometimes clasping. <b>Heads</b> (10–30) in paniculiform arrays. <b>Phyllaries</b> to 1.5 cm (faces moderately hirsute). <b>Receptacles</b> conic to subhemispheric; paleae 5–6.5 mm, apices cuspidate (tips awnlike, 1.5+ mm), glabrous. <b>Ray</b> florets 8–15; laminae (corollas yellow to yellow-orange with basal maroon splotches) linear to oblanceolate, 8–30 × 3–8 mm, abaxially sparsely strigose. <b>Discs</b> 8–15 × 10–20 mm. <b>Disc</b> florets 150–300+; corollas yellowish green basally, otherwise brown-purple, 3–4 mm; style branches ca. 1.2 mm, apices obtuse to rounded. <b>Cypselae</b> 1.9–2.8 mm; pappi coroniform, to 0.2 mm.</span><!--

-->{{Treatment/Body
|distribution=Ont.;Que.;Ala.;Ark.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;N.C.;N.J.;N.Y.;Nebr.;Ohio;Okla.;Pa.;Tenn.;Tex.;Utah;Va.;Vt.;W.Va.;Wis.
|discussion=<p>Varieties 3 (3 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
|Cauline leaves (at least some) 5–7-lobed (Florida, Kentucky, North Carolina, Virginia)
|[[Rudbeckia triloba var. pinnatiloba|Rudbeckia triloba var. pinnatiloba]]
|-id=key-0-1
|1
|Cauline leaves (at least some) 3-lobed
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Ray laminae 8–17 mm; discs 10–15 mm diam. (20–100 m; relatively widespread)
|[[Rudbeckia triloba var. triloba|Rudbeckia triloba var. triloba]]
|-id=key-0-2
|2
|Ray laminae 18–30 mm; discs 15–20 mm diam. (100–1200 m; Iowa, Kentucky, North Carolina, Tennessee)
|[[Rudbeckia triloba var. rupestris|Rudbeckia triloba var. rupestris]]
|}
</div></div><!--

-->{{#Taxon:
name=Rudbeckia triloba
|authority=Linnaeus
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Ont.;Que.;Ala.;Ark.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Mass.;Md.;Mich.;Minn.;Miss.;Mo.;N.C.;N.J.;N.Y.;Nebr.;Ohio;Okla.;Pa.;Tenn.;Tex.;Utah;Va.;Vt.;W.Va.;Wis.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V21_130.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Rudbeckiinae
|genus=Rudbeckia
|section=Rudbeckia sect. Rudbeckia
|species=Rudbeckia triloba
}}<!--

-->[[Category:Treatment]][[Category:Rudbeckia sect. Rudbeckia]]