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Araceae family

Dieffenbachia seguine
(Jacquin) Schott
, Wiener Z. Kunst. 3: 803.  1829.
Bas.: Arum seguine Jacquin (1760).
Syn.: Dieffenbachia maculata (Loddiges) G. Don (1839).

Kann wivyé. Kann bwilé. Dumbcane.   
Naturalized and indigenous?
Quite common robust herb of swampy spots at lower elevations, often close to rivers.
Antigua, St. Kitts,Guadeloupe, Marie Galante, Dominica, Martinique, St. Lucia, St. Vincent, Grenada, Barbados, rest of West Indies, Tobago, Trinidad, Mesoamerica, South America.
Also a cultivated ornamental.
The two wild forms are illustrated. My opinion is that the green form with the odd white dot might be indigenous and the mottled variety, frequently cultivated, naturalized.