Title on cover: Studies in the family Orchidaceae., Reprint. Originally published: Boston and New York : Houghton, Mifflin, 1905., Includes bibliographical references and index., -- fasc. 4. The genus Habenaria in North America -- fasc. 5. The genera and species of Philippine orchids -- fasc. 6. The orchids of Mount Kinabalu, British North Borneo / by Oakes Ames and Charles Schweinfurth. Notes on Philippine orchids VII -- fasc. 7. Pogonia and its allies in the northeastern United States and other papers.