Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1908)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1910)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1915)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1920)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1922)

The Orchidaceae of Mexico and Guatemala - Bateman, Jas. (James), 1811 -1897 (Ridgway, 1837)

Orchidacearum genera et species Vol.1-[2, pars 1] - Kraenzlin, Fritz, 1847 -1934 (Mayer & Müller, 1901)

Orchidacearum genera et species - Kraenzlin, Fritz, 1847 -1934 (Mayer & Müller, 1897)