Difference between revisions of "Arnica rydbergii"
Pittonia 4: 36. 1899.
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|common_names=Rydberg’s arnica | |common_names=Rydberg’s arnica | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=E | ||
+ | |label=Endemic | ||
+ | }} | ||
|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Arnica rydbergii | name=Arnica rydbergii | ||
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|authority=Greene | |authority=Greene | ||
|rank=species | |rank=species | ||
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|publication title=Pittonia | |publication title=Pittonia | ||
|publication year=1899 | |publication year=1899 | ||
− | |special status= | + | |special status=Endemic |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_929.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae |
Latest revision as of 20:15, 5 November 2020
Plants 8–35 cm. Stems (branches from rhizomes) simple. Leaves 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. Heads 1–3(–5). Involucres turbinate-campanulate. Phyllaries 9–15, linear-oblong to narrowly lanceolate. Ray florets 6–10; corollas yellow. Disc florets: corollas yellow; anthers yellow. Cypselae brown, 4–7 mm, densely hirsute (not stipitate-glandular); pappi white, bristles barbellate. 2n = 38, 76.
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.
Discussion
Selected References
None.