View source for Senecio atratus

{{Treatment/ID
|accepted_name=Senecio atratus
|accepted_authority=Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=3: 105. 1896
|year=1896
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Senecio atratus var. milleflorus
|authority=(Greene) Greenman
|rank=variety
}} {{Treatment/ID/Synonym
|name=Senecio milleflorus
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Senecio;Senecio atratus
|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 atratus]]</div></div>
|volume=Volume 20
|mention_page=page 547
|treatment_page=page 554
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> (20–)35–70(–80+) cm (rhizomes or caudices branched, erect to weakly creeping). <b>Herbage</b> floccose-tomentose to canescent, sometimes unevenly glabrescent. <b>Stems</b> 1–(2–5). <b>Leaves</b> progressively reduced distally; petiolate; blades oblong-ovate to oblanceolate, (5–)10–30 × 1.5–4(–6) cm, bases tapered, margins dentate (denticles, dark, callous; mid leaves similar, sessile, smaller; distal leaves bractlike). <b>Heads</b> 20–60+ in corymbiform or subpaniculiform arrays. <b>Calyculi</b> of 2–5 linear bractlets (lengths to 1/3 phyllaries). <b>Phyllaries</b> (± 5) ± 8, 6–8 mm, tips black. <b>Ray</b> florets (± 3) ± 5; corolla laminae 5–8 mm. <b>Cypselae</b> glabrous. <b>2n</b> = 40. (A report of 2n = 46 is presumably erroneous.)</span><!--

-->{{Treatment/Body
|phenology=Flowering late spring–early fall.
|habitat=Dry or drying, rocky or sandy sites in coniferous areas, especially sites with frequent disturbance
|elevation=2800–4000 m
|distribution=Colo.;N.Mex.;Utah;Wyo.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Senecio atratus
|authority=Greene
|rank=species
|parent rank=genus
|synonyms=Senecio atratus var. milleflorus;Senecio milleflorus
|basionyms=
|family=Asteraceae
|phenology=Flowering late spring–early fall.
|habitat=Dry or drying, rocky or sandy sites in coniferous areas, especially sites with frequent disturbance
|elevation=2800–4000 m
|distribution=Colo.;N.Mex.;Utah;Wyo.
|reference=None
|publication title=Pittonia
|publication year=1896
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_1223.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Senecio
|species=Senecio atratus
}}<!--

-->[[Category:Treatment]][[Category:Senecio]]