Rock Garden Plants
Columbiadoria  hallii (A.Gray) G.L.Nesom  trib. Astereae 
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FamilyASTERACEAE
Genus species var.Columbiadoria  hallii (A.Gray) G.L.Nesom  trib. Astereae
SynonymsHaplopappus hallii A.Gray (basionym)
 Hesperodoria hallii (A.Gray) Greene
 Pyrrocoma hallii (A.Gray) Howell
Territory Northwestern U.S.A.OregonWashington
dry, stony grassland
Altitude50-1200m
Description densely leafy, main leaves oblanceolate to linear-oblong, 2-5cm, rigid, erect, scabrous to glabrous, capitula terminal, narrow, involucre resinose, ligules 5-8mm long
Size30-50cm
Coloryellow
Bloomsummer
Ca
Typesubshrub
Cultivationsunny site with a deep, drained soil
alpine house, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1 month, 16-21°C
cuttings in late spring and late summer
BibliographyFlora of North America www.eFloras.org
Compositae Checklist compositae.landcareresearch.co.nz
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý