1,7-Dihydroxy-2,3-methylenedioxyxanthone is found in Polygala cyparissias which is a small herb found in Brazil, Argentina and Uruguay.
References
[1] Klein-Júnior LC, et al. Antihyperalgesic activity of the methanol extract and some constituents obtained from Polygala cyparissias (Polygalaceae). Basic Clin Pharmacol Toxicol. 2012 Sep;111(3):145-53. DOI:10.1111/j.1742-7843.2012.00876.x
