Flora of south-eastern Queensland - Ross, E. M. (Estelle M.) (Queensland Dept. of Primary Industries, 1989)

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

Flora of southeastern Washington and adjacent Idaho - Piper, Charles V. (Charles Vancouver), 1867 -1926 (Press of the New era printing company, 1914)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1985)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 2000)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 2005)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 2001)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1975)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1977)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1988)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1986)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1993)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1984)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1976)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1983)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1981)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1987)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1998)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1999)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1992)

The flora of the American Virgin Islands - Britton, Nathaniel Lord, 1859 -1934 (New York Botanical Garden, 1918)

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)