Liogier is responsible for over 100 scientific journal articles and over 30 books devoted to the study of botany.
During his life's work, he discovered over 300 species of plants all of which can be found at the New York Botanical Garden where he also served as a research associate.
He was a founding member of the Academy of Science and first scientific director of the National Botanical Garden in the Dominican Republic.
Dr. Liogier was recipient of the John Simon Guggenheim Fellowship for Studies in Plant Science.
Liogier was associated with the New York Botanical Garden, Harvard University and the Smithsonian Institution in Washington, D.C.