Pleroma is a genus of flowering plant in the family Melastomataceae, native from Puerto Rico and the Leeward Islands to tropical South America (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru and Venezuela).

He derived the name from Ancient Greek πλήρωμα, pleroma, meaning "fullness", referring to the way the seeds filled the capsule.

[3] In 1885, in his treatment for Flora brasiliensis, Alfred Cogniaux used a broad concept of the genus Tibouchina, transferring into it species at that time placed in Pleroma and other genera.

[3] A phylogenetic analysis in 2013 based on molecular data (2 plastid and 1 nuclear regions) determined that the broad circumscription of Tibouchina was paraphyletic.

[3] A few species reach other parts of South America and the Caribbean (Bolivia, Colombia, Ecuador, French Guiana, the Leeward Islands, Peru, Puerto Rico and Venezuela).