Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1922)

Flora of the Rocky Mountains and adjacent plains : Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (Rydberg, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1917)

Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and the neighboring parts of Nebraska, South Dakota, and British Columbia - Rydberg, Per Axel, 1860 -1931 (The author, 1922)

The flora of the Rocky Mountains - Campbell, Robert, 1835 -1921 (s.n, 1900)

Flora of the Santa Monica Mountains, California - Thompson, Henry J. (University of California, 1986)

A flora of the South Fork of Kings River : from Millwood to the head waters of Bubbs Creek - Eastwood, Alice, 1859 -1953 (Sierra Club, 1902)

Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolina, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana, and in Oklahoma and Texas east of the one hundredth meridian - Small, John Kunkel, 1869 -1938 (The author, 1913)

Flora of the southeastern United States; being descriptions of the seed-plants, ferns and fern-allies growing naturally in North Carolina, South Carolin, Georgia, Florida, Tennessee, Alabama, Mississippi, Arkansas, Louisiana and the Indian territory and in Oklahoma and Texas east of the one-hundredth meridian - Small, John Kunkel, 1869 -1938 (The author, 1903)

Flora of the southeastern Washington and adjacent Idaho - Piper, Charles V. (Charles Vancouver), 1867 -1926 (Press of the New Era Printing Company, 1914)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (American Book Company, 1883)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, 1889)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arr. according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (American Book Co, 1897)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Cambridge Botanical Supply Co, 1897)

Flora of the southern United States: containing abridged descriptions of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Phinney, 1865)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & co, 1883)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Phinney, 1860)

Flora of the southern United States : containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida ; arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1884)

Flora of the southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1887)

Flora of the Southern United States: containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & Co, 1883)

Flora of the southern United States : containing an abridged description of the flowering plants and ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi, and Florida: arranged according to the natural system - Chapman, A. W. (Alvan Wentworth), 1809 -1899 (Ivison, Blakeman, Taylor & co, 1889)

Flora of the state of Washington - Piper, Charles V. (Charles Vancouver), 1867 -1926 (Govt. Print. Off, 1906)

Flora of the state of Washington - Piper, Charles V. (Charles Vancouver), 1867 -1926 (G.P.O, 1906)

Flora of the upper Gangetic plain, and of the adjacent Siwalik and sub-Himalayan tracts - Parker, R. N. (Superintendent of Government Printing, 1903)

The flora of the upper Susquehanna and its tributaries - Clute, Willard Nelson, 1869 -1950 (W.N. Clute, 1898)

Flora of the U.S.S.R - Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) (Israel Program for Scientific Translations, 1974)

Flora of the U.S.S.R - Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) (Israel Program for Scientific Translations, 1999)

Flora of the vicinity of New York; a contribution to plant geography - Taylor, Norman, 1883 -1967 (1915)