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Oxypolis Rafinesque. Dropwort, Hog-fennel, Cowbane.

Key to Oxypolis

A genus of about 4 species, perennial herbs, of temperate North America (Plunkett et al. 2018a). Based on work of Feist et al. (2012) and Feist & Downie (2008), Oxypolis has been limited to the species with compound leaves, distributed in eastern and w. North America. The compound-leaved Oxypolis form a clade far-removed within tribe Oenantheae from the quill-leaved Oxypolis and Ptilmnium and compound-leaved Ptilimnium. The 3 taxa of Oxypolis with “quill-“ or “rachis-leaves” are placed in Tiedemannia, endemic to se. United States and the West Indies.

Ref: Feist & Downie (2008); Feist et al. (2012); Feist et al. (2012); Kral (1981a); Mathias & Constance (1945); Plunkett et al. (2018a) In Kadereit & Bittrich (2018); Tucker et al. (1983). Show full citations.

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