Rock Garden Plants
Arnica cordifolia Hook. trib. Heliantheae 
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FamilyASTERACEAE
Genus speciesArnica cordifolia Hook. trib. Heliantheae
SynonymsArnica abortiva Greene
 Arnica andersonii Piper
 Arnica austinae Rydb.
Habitatgrassland and woods
Altitude500-3000m
Descriptionleaves cordate, mostly dentate, lower leaves long petiolate, capitula 1-3, involucre broadly campanulate, phyllaries narrowly ovate to lanceolate, ligules 6-13
Size10-40cm
Coloryellow
Bloomsummer
Ca
Typetuft
Cultivationcold, semi-shady site with a humous, moist soil
alpine house, moist, humous soil, semi-shade
Propagationseed in spring, barely covered, germ. 1 month, 10-16°C
division in spring; cuttings in late summer
Territory Northern America
     Subarctic America (Northwest Territories , Yukon )
     Western Canada (Alberta , British Columbia , Manitoba , Saskatchewan )
     Eastern Canada (Ontario )
     Northwestern U.S.A. (Colorado , Idaho , Montana , Oregon , Washington , Wyoming )
     North-Central U.S.A. (South Dakota )
     Northeastern U.S.A. (Michigan )
     Southwestern U.S.A. (Arizona , California , Nevada , Utah )
     South-Central U.S.A. (New Mexico)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Picture
Comments

ASTERACEAE

Arnica cordifolia Hook., Fl. Bor.-Amer. [Hooker] 1(suppl.): 331 (1834)

Synonyms:
Arnica abortiva Greene
Arnica andersonii Piper
Arnica austinae Rydb.
Arnica chionophila Greene
Arnica cordifolia genuina Maguire
Arnica cordifolia humilis (Rydb.) Maguire
Arnica cordifolia macrophylla (Nutt.) Maguire
Arnica cordifolia pumila (Rydb.) Maguire
Arnica cordifolia whitneyi (Fernald) Maguire
Arnica evermannii Greene
Arnica hardinae H.St.John
Arnica humilis Rydb.
Arnica macrophylla Nutt.
Arnica microphylla Walp.
Arnica paniculata A.Nelson
Arnica pumila Rydb.
Arnica subcordata Greene
Arnica whitneyi Fernald
Senecio cumingii Klatt

Subarctic America, Canada, w. & c. USA
70 NWT YUK 71 ABT BRC MAN SAS 72 ONT 73 COL IDA MNT ORE WAS WYO 74 SDA 75 MIC 76 ARI CAL NEV UTA 77 NWM

500-3000m

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