But then you have plants with both submerged and emersed growth.Well, If i was to guess...
Non aquatic plants are usually tougher and waxier than aquatic plants...
terrestrial plant builds a waxy layer on their leaves to hold in water.. Aquatic plants are in water, so they don't build that waxy layer and will look matted, not shiny.
The link above looks like a good list. If you find that you bought a non aquatic and were told otherwise, RETURN IT and make a fuss. My wife brought home a "true aquatic" similar to Pineapple plant in one of those neat gel packages with "true aquatic" listed. I figure most of the plants die and the keeper gets the impression that plants are hard.So is there a set way to determine whether a plant is aquatic or nonaquatic? :icon_roll