The flora of North Carolina from Ranunculaceae to Salviniaceae - Hyams, C. W. (Charles Walter), 1864 - (The North Carolina College of Agriculture and Mechanic Arts, Agricultural Experiment Station, 1899)

The Great Basin naturalist - Brigham Young University. (M.L. Bean Life Science Museum, Brigham Young University, 1997)

Loudon's encyclopaedia of plants; comprising the specific character, description, culture, history, application in the arts, and every other desirable particular respecting all the plants indigenous to, cultivated in, or introduced into Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longmans, Green, 1866)