Flora of the District of Columbia and vicinity. By A.S. Hitchcock and Paul C. Standley, with the assistance of the botanists of Washington - Standley, Paul Carpenter, 1884 -1963 (Govt. print. off, 1919)

Flora of the Florida keys; being descriptions of the see-plants growing naturally on the islands of the Florida reef from Virginia key to Dry Tortugas - Small, John Kunkel, 1869 -1938 (The author, 1913)

Flora of the Florida Keys : being descriptions of the seed-plants growing naturally on the islands of the Florida reef from Virginia Key to Dry Tortugas - Small, John Kunkel, 1869 -1938 (J.K. Small, 1913)

Flora of the Florida Keys; being descriptions of the seed-plants growing naturally on the islands of the Florida reef from Virginia Key to Dry Tortugas - Small, John Kunkel, 1869 -1938 (The author, 1913)

Flora of the four corners region : vascular plants of the San Juan River drainage, Arizona, Colorado, New Mexico, and Utah / Kenneth D. Heil...[et al.] - Heil, Kenneth D. (Missouri Botanical Garden, 2013)

Flora of the Fraser Experimental Forest, Colorado - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1993)

The flora of the Gulf Biologic Station - Cocks, R. S. (Reginald Somers), 1863 -1926 (Louisiana State Board of Agriculture and Immigration, 1907)

Flora of the Hawaiian islands :a description of their phanerogams and vascular cryptogams - Hillebrand, W. F. 1853 -1925 (Williams & Norgate, 1888)

Flora of the John Day Valley, Oregon - Henderson, L. F. (Louis Fourniquet), 1853 -1942

Flora of the Lesser Antilles : Leeward and Windward Islands - Proctor, George R (Arnold Arboretum, Harvard University, 1979)

A flora of the liverworts and hornworts of New Zealand - Engel, John J., 1941 - (Missouri Botanical Garden Press, 2008)

The flora of the metamorphic region of Alabama - Earle, F. S. (Franklin Sumner), 1856 -1929 (Brown Printing Co, 1902)

The flora of the Nilgiri and Pulney Hill-tops - Fyson, P. F. (Philip Furley), 1877 -1947 (Printed by the Supt., Govt. Press, 1915)

The flora of the North Appalachian Experimental Watershed and surrounding territory - Moldenke, Harold N. (Harold Norman), 1909 -1996 (Soil Conservation Service, U.S.D.A, 1943)