indian spongeplant, or limnobium laevigatum, a floating aquatic plant of the family hydrocharitaceae

environment tropical texture floating plants botanical ecology shiny greenery gardening foliage plant limnobium laevigatum amazon frogbit duckweed closeup background nature garden growth leaves fresh leaf natural green west indian spongeplant south american smooth aquatic hydrocharitaceae biology botany water aquarium pond river lake family hydrocharitaceae