Literature Here you can find some hints to literature concerning Echinodorus or other aquarium plants. Kasselmann, C.: Aquarienpflanzen, Ulmer Verlag (only German) Kasselmann, C.: Echinodorus -  Die beliebtesten Aquarienpflanzen, Dähne Verlag (only German) Rataj, Karel & Horeman, Thomas J.: Aquarium plants: Their Identification, Cultivation and Ecology, TFH Publications Scheuermann, Ines: Aquarium Plants Manual Haynes, R.R. & Holm-Nielsen, L.B.: The Alismataceae, Flora Neotropica, New York Botanical Garden Rataj, Karel: