I deeply acknowledge the help of Miguel A. Vives Heyliger (Papo Vives), who not only thoroughly knows the Puerto Rican flora, but also shares his knowledge with an uncommon generosity. Jorge Bencosme encouraged me to study the palms and helped to identify several species. Duane Kolterman provided important information about some species. Carlos Delannoy, kindly read part of the text and made important suggestions. My wife, Mayra Acevedo, read the text searching for thos errors that one misses regardless of how many times the text is read.

The GRIN database was adopted as the standard for scientific nomenclature and geographic distribution. Botanary provided the meanings of many scientific names. PACSOA was very useful for the study or palms. Common trees of Puerto Rico and the Virgin Islands, and Trees of Puerto Rico and the Virgin Islands, were read daily. Many other publications available through Google book search and a multitude of websites were also consulted, including the excellent Wikipedia. The list of plants prepared by Carlos Figueroa at the end of the 1980s was the main source of information on the history of campus plants.

If you copy from one author, it's plagiarism; if you copy from many, it's research. --W. Mizner