-
由 Steward, Albert Newton, 1897-
出版 1960 -
Manual of the botany (Phænogamia and Pteridophyta) of the Rocky Mountain regionfrom New Mexico to the British boundaryBook由 Coulter, John Merle, 1851-1928
出版 1885 -
由 Hess, Harry Hammond, 1906-1969
出版 1960