Pleroma raddianum, synonyms including Pleroma pulchrum <small>(Cham.) Triana</small> and Tibouchina pulchra, is a plant species in the family Melastomataceae.
It is a pioneer tree species, growing after land degradation, in the Atlantic Rainforest of Sao Paulo State in Brazil, a forest which only 12 percent of original area remains.
2,6-Dimethoxybenzoquinone is a toxic chemical compound found in P. raddianum.