Ageratina occidentalis

Ageratina occidentalis

Taxonavigation

Taxonavigation: Asterales
Classification System: APG IV Superregnum: Eukaryota Regnum: Plantae Cladus: Angiosperms Cladus: Eudicots Cladus: Core eudicots Cladus: Asterids Cladus: Campanulids Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Eupatorieae
Subtribus: Oxylobinae
Genus: Ageratina
Species: Ageratina occidentalis

Name

Ageratina occidentalis (Hook.) R.M.King & H.Rob., Phytologia 19: 224. 1970.

Synonyms

• Homotypic
  • Eupatorium occidentale Hook. in Fl. Bor.-Amer. 1: 305 (1833)
• Heterotypic
  • Eupatorium berlandieri A.Gray in W.H.Emory, Rep. U.S. Mex. Bound. 2(1): 76 (1859)
  • Eupatorium occidentale var. decemplex A.Nelson in Bot. Gaz. 53: 226 (1912)
  • Eupatorium occidentale var. subroseum DC. in Prodr. 5: 176 (1836)
  • Eupatorium oregonum Nutt. in Trans. Amer. Philos. Soc., n.s., 7: 286 (1840)
  • Kyrstenia occidentalis Greene in Leafl. Bot. Observ. Crit. 1: 9 (1903)

Distribution

Native distribution areas:
Continental: Northern America Regional: Northwestern U.S.A. Idaho, Montana, Oregon, Washington Regional: Southwestern U.S.A. California, Nevada, Utah. References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

References

• King, R.M. & Robinson, H. 1970. Studies in the Eupatorieae (Compositae). XIX. New combinations in Ageratina. Phytologia 19: 208–229. BHL Reference page. 

Additional references

• Nuttall, T. 1840. Descriptions of new species and genera of plants in the natural order of the Compositae, collected in a tour across the continent to the Pacific, a residence in Oregon, and a visit to the Sandwich Islands and upper California, during the years 1834 and 1835. Transactions of the American Philosophical Society, held at Philadelphia, for promoting useful knowledge, n.s.[new series][ser. 2], 7: 283–453. BHL Reference page. 

Links

• USDA NRCS PLANTS Profile
• International Plant Names Index. 2018. Ageratina occidentalis. Published online. Accessed January 07 2018.
• Govaerts, R. et al. 2018. Ageratina occidentalis in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2018 January 07. Reference page. 
• Tropicos.org 2018. Ageratina occidentalis. Missouri Botanical Garden. Published on the internet. Accessed: 07 January 2018.
• Hassler, M. 2018. Ageratina occidentalis. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 January 07. Reference page. 
• USDA, ARS, Germplasm Resources Information Network. Ageratina occidentalis in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names

English: Western Snakeroot

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