"(Rich.) Caspary" . . . . "Elodea callitrichoides" . . . "Elodea callitrichoides (Rich.) Caspary" . "Liliopsida" . . . . . "Hydrocharitaceae" . . . "South American Waterweed" . "Alismatales" . "Magnoliophyta" . . . "Plantae" . . "Elodea" .