View source for Arnica rydbergii

{{Treatment/ID
|accepted_name=Arnica rydbergii
|accepted_authority=Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=4: 36. 1899
|year=1899
}}
|common_names=Rydberg’s arnica
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Arnica;Arnica rydbergii
|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 rydbergii]]</div></div>
|volume=Volume 21
|mention_page=page 367
|treatment_page=page 371
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>8–35 cm. <b>Stems</b> (branches from rhizomes) simple. <b>Leaves</b> 2–4 pairs (basal often persistent on sterile rosettes), mostly cauline; petiolate (at least basal) or sessile; blades oblanceolate to spatulate, 2–7 × 0.5–2.5 cm, margins usually entire, sometimes denticulate, rarely dentate, apices usually acute, sometimes obtuse, faces sparsely puberulent, moderately pubescent distally, stipitate-glandular. <b>Heads</b> 1–3(–5). <b>Involucres</b> turbinate-campanulate. <b>Phyllaries</b> 9–15, linear-oblong to narrowly lanceolate. <b>Ray</b> florets 6–10; corollas yellow. <b>Disc</b> florets: corollas yellow; anthers yellow. <b>Cypselae</b> brown, 4–7 mm, densely hirsute (not stipitate-glandular); pappi white, bristles barbellate. <b>2n</b> = 38, 76.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jul–Aug.
|habitat=Dry to mesic, exposed, rocky alpine slopes and ridges or alpine meadows
|elevation=1200–3400 m
|distribution=Alta.;B.C.;Colo.;Idaho;Mont.;Oreg.;Utah;Wash.;Wyo.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Arnica rydbergii
|author=
|authority=Greene
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Jul–Aug.
|habitat=Dry to mesic, exposed, rocky alpine slopes and ridges or alpine meadows
|elevation=1200–3400 m
|distribution=Alta.;B.C.;Colo.;Idaho;Mont.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Pittonia
|publication year=1899
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_929.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Arnica
|species=Arnica rydbergii
}}<!--

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