Between 1821 and 1823 he was sketching military installations, ports and towns in Puerto Rico.
[1] After travelling extensively, and forming numerous collections of plants, he fell sick and died in Martinique.
[3] His principal works were: Le jeune botaniste, ou entretiens d'un père avec son fils sur la botanique et la physiologie végétale, etc.
; (2 vols., Paris, 1812), and Journal de Voyage du Botaniste Auguste Plée, a Travers les Antilles, les Guyanes et le Bresil (2 vols., Paris, 1828).
The Muséum national d'Histoire naturelle (MNHN) in Paris published a catalog of Plée's collection in three volumes in 1830.