Fresh water and salt-loving plants generally have very wide ranges and are much diffused, but this seems to be connected with the nature of the stations inhabited by them, and has little or no relation to the size of the genera to which the species belong.
Ur geza eta gazitako landareak oso hedatu eta barreiaturik daude oro har, baina badirudi honek bizi diren lekuen nolakotasunarekin baduela zerikusirik, eta zerikusi handirik edo bat ere ez du espezie horien generoaren tamainuarekin.