View source for Senecio integerrimus

{{Treatment/ID
|accepted_name=Senecio integerrimus
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Gen. N. Amer. Pl.
|place=2: 165. 1818
|year=1818
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Senecio;Senecio integerrimus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Senecio]]</div><div class="higher-taxon"><small>species</small>[[Senecio integerrimus]]</div></div>
|volume=Volume 20
|mention_page=page 547, 554
|treatment_page=page 556
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials </b>(possibly biennials), (10–)20–70 cm (caudices buttonlike, roots fleshy-fibrous). <b>Herbage</b> arachnose, loosely tomentose, or villous (hairs crisped, jointed), glabrescent. <b>Stems</b> single. <b>Leaves</b> progressively reduced distally; ± petiolate; blades elliptic, lanceolate, linear, oblanceolate, rounded-deltate, or suborbiculate, 6–25 × 1–6 cm, bases ± tapered or truncate to cordate, margins entire or ± dentate (distal leaves sessile, bractlike). <b>Heads</b> 6–20(–40+) in corymbiform arrays (peduncle of terminal head often shorter than others). <b>Calyculi</b> of 1–5+ linear to filiform bractlets (seldom more than 2 mm). <b>Phyllaries</b> usually ± 13 or ± 21, rarely ± 8, (4–)5–12(–15) mm, tips usually black, sometimes green. <b>Ray</b> florets usually ± 8 or ± 13, sometimes 0; corolla laminae 6–15(–20) mm (usually yellow, ochroleucous to white in one variety). <b>Cypselae</b> usually glabrous, sometimes hirtellous (mostly on angles). <b>2n</b> = 40, 80.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;Sask.;Calif.;Colo.;Idaho;Iowa;Kans.;Minn.;Mont.;N.Dak.;N.Mex.;Nebr.;Nev.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|discussion=<p>Varieties 5 (5 in the flora).</p><!--
--><p>The varieties of <i>Senecio integerrimus</i> are distinguished by morphology and geography.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Basal leaves with distinct petioles, blades usually ovate to rounded-deltate, sometimes obovate to oblanceolate; ray corollas white or ochroleucous
|[[Senecio integerrimus var. ochroleucus|Senecio integerrimus var. ochroleucus]]
|-id=key-0-1
|1
|Basal leaves with or without distinct petioles, blades elliptic, lanceolate, oblanceolate, rounded-deltate, sublinear, or suborbiculate; ray corollas yellow (or rays 0)
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Herbage glabrous or glabrate at flowering (except in leaf axils and among heads); phyllaries linear-subulate, tips usually green, minutely (if at all) black
|[[Senecio integerrimus var. integerrimus|Senecio integerrimus var. integerrimus]]
|-id=key-0-2
|2
|Herbage usually arachnose, tomentose, or villous at flowering; phyllaries lanceolate to linear-subulate, tips black (if minutely so, then narrowly lanceolate and broader than subulate)
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Basal and proximal leaves oblong or lanceolate to sublinear; heads 3–6(–16+); phyllaries 10–15+ mm
|[[Senecio integerrimus var. scribneri|Senecio integerrimus var. scribneri]]
|-id=key-0-3
|3
|Basal and proximal leaves mostly elliptic to oblanceolate, sometimes elliptic or rounded-deltate to suborbiculate; heads usually 6–15(–30+; if fewer than 6, leaves lanceolate or broader); phyllaries 5–12 mm.
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Plants copiously arachnose, tomentose, or villous at flowering; phyllaries linear-subulate, 8–12 mm, tips minutely, if at all, blackened
|[[Senecio integerrimus var. major|Senecio integerrimus var. major]]
|-id=key-0-4
|4
|Plants copiously to sparsely arachnose, tomentose, or villous at flowering; phyllaries mostly lanceolate (seldom as narrow as linear-subulate), 5–10 mm, tips black
|[[Senecio integerrimus var. exaltatus|Senecio integerrimus var. exaltatus]]
|}
</div></div><!--

-->{{#Taxon:
name=Senecio integerrimus
|authority=Nuttall
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Alta.;B.C.;Man.;Sask.;Calif.;Colo.;Idaho;Iowa;Kans.;Minn.;Mont.;N.Dak.;N.Mex.;Nebr.;Nev.;Oreg.;S.Dak.;Utah;Wash.;Wyo.
|reference=None
|publication title=Gen. N. Amer. Pl.
|publication year=1818
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1230.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Senecio
|species=Senecio integerrimus
}}<!--

-->

[[Category:Treatment]]
[[Category:Senecio]]
[[Category:Revised Since Print]]