1. International code of botanical nomenclature (Tokyo Code) adopted by the Fifteenth International Botanical Congress, Yokohama, August‐September 1993;Greuter W.;Regnum Veg.,1994
2. Om Mexicos podestemoner;Liebmann F.;Förh. Skand. Naturf. Möte,1847
3. Taxonomy of Mexican Podostemaceae;Novelo Retana A.;Aquatic Bot., Special Issue,1997
4. New World Podostemaceae: Ecological and Evolutionary Enigmas