Columbiadoria

Columbiadoria is a small North American genus of flowering plants in the daisy family.[3][4][5][6]

Columbia River daisy
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Columbiadoria G.L. Nesom
Species:	C. hallii
Binomial name
Columbiadoria hallii (A. Gray) G.L. Nesom
Synonyms[1][2]
Haplopappus hallii A.Gray Hesperodoria hallii (A.Gray) Greene Pyrrocoma hallii (A.Gray) Howell Hoorebekia hallii (A.Gray) Piper Aster howellii Kuntze

The only known species is Columbiadoria hallii, native to the northwestern United States (States of Washington and Oregon).[1] The species is a subshrub up to 60 cm (2 feet) tall. One plant produces numerous yellow flower heads with both ray florets and disc florets.[7][8][9]

References

1. Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-15 at Archive.today
2. The Plant List, Columbiadoria hallii (A.Gray) G.L.Nesom
3. Nesom, Guy L. 1991. Redefinition of Hesperodoria (Asteraceae: Astereae) and the segregation of Columbiadoria, a new monotypic genus from the western United States. Phytologia 71(3): 244–251
4. Botanic Garden and Botanical Museum Berlin-Dahlem. "Details for: Astereae". Euro+Med PlantBase. Freie Universität Berlin. Retrieved 2009-07-18.
5. UniProt. "Tribe Astereae". Retrieved 2009-07-18.
6. Tropicos, Columbiadoria G.L. Nesom
7. Biota of North America Program 2013 county distribution map
8. Turner Photographics
9. Paul Slichter, Columbia River Daisy, Hall's Columbiadoria, Hall's Goldenweed, Columbiadoria hallii