LITERATURE CITED Kartesz, John T. and Rosemarie Kartesz. 1980. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. Univ. of North Carolina Press, Chapel Hill. Kucher, A. W. 1964. Potential natural vegetation of the conterminous United States (map and manual). Amer. Geog. Soc. Spec. Pub. 36. Nebraska Statewide Arboretum. 1982. Common and scientific names of Nebraska plants. Publ. 101. Nebraska Statewide Arboretum, Lincoln. Stubbendieck, J. S. L. Hatch, and K. J. Hirsch. 1986. North American range plants. Univ. of Nebraska Press, Lincoln.
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