1) Aquatic or bog plants 2) Family pontederiaceae 3) Liliopsid family 4) Monocot family 5) Pickerelweed family 
Pontederiaceae is a family of flowering plants. The APG II system, of 2003 (unchanged from the APG system, of 1998) places the family in the order Commelinales, in the commelinid clade, in the monocots. It is a small family of heterostylous aquatic plants, occurring in tropical and subtropical waters. Charles Darwin was interested in the specializ...
[n] - aquatic or bog plants
family Pontederiaceae noun aquatic or bog plants