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

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

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)

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, 2^nd Edition

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

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.

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 online. Accessed: 2018 January 07. Reference page.
Tropicos.org 2018. Ageratina occidentalis. Missouri Botanical Garden. Published online. 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 online. 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.

English: Western Snakeroot