1. Amorim AM (2002) Five new species of Heteropterys (Malpighiaceae) from Central and South America. Brittonia 54:217–232
2. Amorim AM (2003) Estudos taxonômicos em Heteropterys (Malpighiaceae). PhD Thesis, São Paulo University
3. Anderson WR (1981) Malpighiaceae. In: Maguire B (ed) The Botany of the Guayana Highland-Part XI. Mem New York Bot Gard 32:21–305
4. Anderson C (1982) A monograph of the genus Peixotoa (Malpighiaceae). Contrib Univ Mich Herb 15:1–92
5. Anderson WR (1990) The origin of the Malpighiaceae: the evidence from morphology. Mem N Y Bot Gard 64:210–224