Artemisia campestris subsp. caudata is widely distributed but is most common in the eastern and central United States and is occasional in the west [49,56]. It occurs as far north as New Brunswick and Saskatchewan and as far south as Florida and Texas [75,105]. Artemisia campestris subsp. campestris is an introduced species, native to Eurasia. It occurs occasionally in the Atlantic Coast states . Artemisia campestris subsp. borealis var. borealis is most common in the northern part of North America. It occupies sites from the Bering Strait and throughout Alaska, to Labrador, Canada and occurs in the Great Lakes states and in Colorado as well [2,59,93]. Artemisia campestris subsp. borealis var. scouleriana occurs primarily in the western United States and Canada. It occupies habitats from the Yukon Territory to western Nebraska and New Mexico [49,62]. Artemisia campestris subsp. borealis var. petiolata is endemic and restricted to Utah [60,110]. Artemisia campestris subsp. borealis var. wormskioldii is rare in Washington and, while historically present in Oregon, is considered extirpated today . Plants Database provides a distributional map of field sagewort and its infrataxa. Additional information regarding the distribution of field sagewort and its infrataxa is available in [49,56,60].
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- 105. Stubbendieck, James; Coffin, Mitchell J.; Landholt, L. M. 2003. Weeds of the Great Plains. 3rd ed. Lincoln, NE: Nebraska Department of Agriculture, Bureau of Plant Industry. 605 p. In cooperation with: University of Nebraska - Lincoln. 
- 60. Kartesz, John T.; Meacham, Christopher A. 1999. Synthesis of the North American flora (Windows Version 1.0), [CD-ROM]. In: North Carolina Botanical Garden (Producer). In cooperation with: The Nature Conservancy, Natural Resources Conservation Service, and U.S. Fish and Wildlife Service. 
- 110. U.S. Department of Agriculture, Natural Resources Conservation Service. 2007. PLANTS Database, [Online]. Available: http://plants.usda.gov/. 
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