1. AIST/Geological Survey of Japan, 2015. Geological Map Navi. ().
2. Podostemaceae in Africa (including Madagascar)–state of the art and open questions;Ameka,2010
3. Founder effect speciation;Barton,1989
4. The age and diversification of the angiosperms re-revisited;Bell;Amer. J. Bot.,2010
5. Podostemaceae;Cook,2007