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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Apiales

Familia: Apiaceae
Subfamilia: Apioideae
Tribus: Oenantheae
Genus: Oxypolis
Species (4 accepted sensu Feist (et al.) (2012):
O. fendleri – O. occidentalis – O. rigidior – O. ternata

Oxypolis Raf. Neogenyton: 2. (1825)
Type species: Oxypolis rigidior (L.) Raf. Bull. Bot., Geneva 1(8): 218. (1830)


Rafinesque-Schmaltz, C.S. (1825) Neogenyton: 2.
Feist, M.A.E., Downie, S.R., Magee, A.R. & Liu, M.R., 2012. Revised generic delimitations for Oxypolis and Ptilimnium (Apiaceae) based on leaf morphology, comparative fruit anatomy, and phylogenetic analysis of nuclear rDNA ITS and cpDNA trnQ-trnK intergenic spacer sequence data. Taxon 61(2): 402-418. PDF Reference page.


Hassler, M. 2018. Oxypolis. 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 Aug. 25. Reference page.
International Plant Names Index. 2018. Oxypolis. Published online. Accessed: Aug. 25 2018. 2014. Oxypolis. Missouri Botanical Garden. Published on the internet. Accessed: 2014 Apr. 18.

Oxypolis is a small genus of North American flowering plants in the carrot family known as cowbane, water dropwort, dropwort, hog-fennel, and pig-potato.[1][2][3] As of 2020, Kew's Plants of the World Online accepts four species in the genus Oxypolis:

Oxypolis fendleri (A.Gray) A.Heller
Oxypolis occidentalis J.M.Coult. & Rose
Oxypolis rigidior (L.) Raf.
Oxypolis ternata (Nutt.) A.Heller


"Oxypolis Raf". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 August 2020.
Brouillet L, Desmet P, Coursol F, Meades SJ, Favreau M, Anions M, Bélisle P, Gendreau C, Shorthouse D, and contributors (2010+). "Oxypolis rigidior (Linnaeus) Rafinesque". Database of Vascular Plants of Canada (VASCAN). Retrieved 21 August 2020.
Weakley, Alan S. (2018), Flora of the Southern and Mid-Atlantic States, working draft of 20 August 2018, University of North Carolina Herbarium, North Carolina Botanical Garden, University of North Carolina at Chapel Hill

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