View source for Arnica longifolia

{{Treatment/ID
|accepted_name=Arnica longifolia
|accepted_authority=D. C. Eaton in S. Watson
|publications={{Treatment/Publication
|title=in S. Watson, Botany (Fortieth Parallel),
|place=186. 1871
|year=1871
}}
|common_names=Spearleaf arnica
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Arnica longifolia subsp. myriadenia
|authority=(Piper) Maguire
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Arnica myriadenia
|authority=
|rank=species
}}
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Arnica;Arnica longifolia
|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 Chaenactidinae]]</div><div class="higher-taxon"><small>genus</small>[[Arnica]]</div><div class="higher-taxon"><small>species</small>[[Arnica longifolia]]</div></div>
|volume=Volume 21
|mention_page=page 368
|treatment_page=page 374
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>30–60(–110) cm. <b>Stems</b> (often relatively numerous, clustered in clonal patches) simple. <b>Leaves</b> 5–7 pairs, mostly cauline (basal leaves usually withered by flowering); sessile or subsessile (proximalmost with connate-sheathing bases); blades lanceolate to lance-elliptic, 5–12(–15) × 1.5–3.5 cm, margins usually entire, rarely denticulate, apices acute to acuminate, faces scabrid-puberulent, sometimes glandular (distal leaves not much reduced). <b>Heads</b> 3–20(–35). <b>Involucres</b> turbinate-campanulate. <b>Phyllaries</b> 11–15(–20), narrow to broadly lanceolate. <b>Ray</b> florets 6–15; corollas yellow. <b>Disc</b> florets 6–11; corollas yellow; anthers yellow. <b>Cypselae</b> brown to black, 3–7 mm, glabrous or sparsely hirsutulous, stipitate-glandular; pappi stramineous to tawny, bristles barbellate to subplumose. <b>2n</b> = 57, 76.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Oct.
|habitat=Montane coniferous forests to alpine, usually moist areas, stream banks or late snow-melt areas
|elevation=1300–3700 m
|distribution=Alta.;B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.;Wyo.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Arnica longifolia
|authority=D. C. Eaton in S. Watson
|rank=species
|parent rank=genus
|synonyms=Arnica longifolia subsp. myriadenia;Arnica myriadenia
|basionyms=
|family=Asteraceae
|phenology=Flowering Jun–Oct.
|habitat=Montane coniferous forests to alpine, usually moist areas, stream banks or late snow-melt areas
|elevation=1300–3700 m
|distribution=Alta.;B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=in S. Watson, Botany (Fortieth Parallel),
|publication year=1871
|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_937.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Arnica
|species=Arnica longifolia
}}<!--

-->[[Category:Treatment]][[Category:Arnica]]