Global patterns of plant diversity : Alwyn H. Gentry's forest transect data set - Missouri Botanical Garden. (Missouri Botanical Garden Press, 2002)

The Gloxinian - American Gloxinia; Gesneriad Society. (American Gloxinia and Gesneriad Society, 2004)

Grasses of Southern Africa - Russell, G. E. Gibbs, L. Watson, M. Koekemoer, L. Smook, N. P. Barker, H. M. Anderson, M. J. Dallwitz (1990)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1972)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1975)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1977)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1978)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1979)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1980)