View source for Arnica unalaschcensis

{{Treatment/ID
|accepted_name=Arnica unalaschcensis
|accepted_authority=Lessing
|publications={{Treatment/Publication
|title=Linnaea
|place=6: 238. 1831
|year=1831
}}
|common_names=Alaska arnica
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Chaenactidinae;Arnica;Arnica unalaschcensis
|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 unalaschcensis]]</div></div>
|volume=Volume 21
|mention_page=page 366, 367
|treatment_page=page 369
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism growth form"><b>Plants </b>8–30 cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture"><b>Stems </b>simple (sparsely to moderately hairy, hairs translucent with purple septa).</span> <span class="statement" id="st-d0_s2" data-properties="leaf quantity"><b>Leaves </b>2–5 pairs, mostly cauline;</span> <span class="statement" id="st-d0_s3" data-properties="leaf position;leaf architecture;leaf architecture">petiolate (proximal) or sessile;</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;blade shape;blade shape;blade atypical length;blade length;blade width;margin architecture or shape;margin position;margin shape or architecture;apex shape;face pubescence;face pubescence">blades elliptic-oblanceolate, obovate or spatulate, (3–) 5–12 × 1.5–3 cm, margins usually entire proximal to mid-blade, serrate to dentate distally, apices acute to obtuse or abruptly pointed, faces usually glabrate, sometimes scabrous to sparsely stipitate-glandular.</span> <span class="statement" id="st-d0_s5" data-properties="head quantity"><b>Heads </b>1 (erect).</span> <span class="statement" id="st-d0_s6" data-properties="involucre shape;involucre shape"><b>Involucres </b>hemispheric or turbinate-hemispheric (bases moderately villous).</span> <span class="statement" id="st-d0_s7" data-properties="phyllary quantity;phyllary shape"><b>Phyllaries </b>14–24, lanceolate (apices obtuse, tips blunt, callous).</span> <span class="statement" id="st-d0_s8" data-properties="ray-floret quantity"><b>Ray-</b>florets 6–17;</span> <span class="statement" id="st-d0_s9" data-properties="corolla coloration">corollas yellow (laminae 12–17 mm).</span> <span class="statement" id="st-d0_s10" data-properties="corolla coloration"><b>Disc-</b>florets: corollas yellow;</span> <span class="statement" id="st-d0_s11" data-properties="anther coloration">anthers dark purple.</span> <span class="statement" id="st-d0_s12" data-properties="cypsela coloration;cypsela some measurement;cypsela pubescence;cypsela pubescence"><b>Cypselae </b>brown, 4–5 mm, shortly hispidulous (hairs duplex, apically forked) and stipitate-glandular;</span> <span class="statement" id="st-d0_s13" data-properties="pappus coloration">pappi tawny, bristles subplumose.</span> <span class="statement" id="st-d0_s14" data-properties="bristle architecture;2n chromosome quantity">2n = 38.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Coastal tundra to alpine slopes
|elevation=0–1500 m
|distribution=Alaska;Asia (Japan);Asia (Russian Far East)
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Arnica unalaschcensis
|authority=Lessing
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering Jun–Aug.
|habitat=Coastal tundra to alpine slopes
|elevation=0–1500 m
|distribution=Alaska;Asia (Japan);Asia (Russian Far East)
|reference=None
|publication title=Linnaea
|publication year=1831
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_918.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae
|genus=Arnica
|species=Arnica unalaschcensis
|2n chromosome quantity=38
|anther coloration=dark purple
|apex shape=acute;obtuse or abruptly pointed
|blade atypical length=3cm;5cm
|blade length=5cm;12cm
|blade shape=spatulate;obovate;elliptic-oblanceolate
|blade width=1.5cm;3cm
|bristle architecture=subplumose
|corolla coloration=yellow;yellow
|cypsela coloration=brown
|cypsela pubescence=stipitate-glandular;hispidulous
|cypsela some measurement=4mm;5mm
|face pubescence=scabrous;sparsely stipitate-glandular
|head quantity=1
|involucre shape=turbinate-hemispheric;hemispheric
|leaf architecture=sessile;petiolate
|leaf position=cauline
|leaf quantity=2;5
|margin architecture or shape=entire
|margin position=proximal
|margin shape or architecture=serrate to dentate
|pappus coloration=tawny
|phyllary quantity=14;24
|phyllary shape=lanceolate
|ray-floret quantity=6;17
|stem architecture=simple
|whole_organism growth form=plant
|whole_organism some measurement=8cm;30cm
}}<!--

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