A manual and dictionary of the flowering plants and ferns - Willis, J. C. (John Christopher), 1868 -1958 (University Press, 1904)

A manual and dictionary of the flowering plants and ferns - Willis, J. C. (John Christopher), 1868 -1958 (University Press, 1908)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2004)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2003)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2007)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2015)

A manual flora of Egypt - Muschler, Reinhold Conrad, 1883 -1957 (1912)

A manual of botany, anatomical and physiological : for the use of students - Royal College of Physicians of Edinburgh. (W. Blackwood, 1874)

A manual of botany: being an introduction to the study of the structure, physiology, and classification of plants - Balfour, John Hutton, 1808 -1884 (J. J. Griffin [etc.] 1851, 1851)