Columbiadoria Explained

Columbiadoria is a small North American genus of flowering plants in the family Asteraceae.^{[1] [2] [3]}

The only known species is Columbiadoria hallii, native to the northwestern United States (States of Washington and Oregon). 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.^{[4] [5] [6]}

Notes and References

1. https://www.biodiversitylibrary.org/page/13155986#page/82/mode/1up 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
2. Web site: Details for: Astereae . 2009-07-18 . Botanic Garden and Botanical Museum Berlin-Dahlem . Botanical Garden in Berlin . Euro+Med PlantBase . .
3. http://www.tropicos.org/Name/40037792 Tropicos, Columbiadoria G.L. Nesom
4. http://bonap.net/MapGallery/County/Columbiadoria%20hallii.png Biota of North America Program 2013 county distribution map
5. http://www.pnwflowers.com/flower/columbiadoria-hallii Turner Photographics
6. http://science.halleyhosting.com/nature/gorge/sun/daisy/columbiadoria/hallii.htm Paul Slichter, Columbia River Daisy, Hall's Columbiadoria, Hall's Goldenweed, Columbiadoria hallii