Smooth Amaranth (Amaranthus hybridus) also known as: Slim Amaranth, Green Amaranth or Smooth Pigweed  Division - Magnoliaphyta Class - Magnoliopsida Subclass - Caryophyllidae Order - Caryophyllales Family - Amaranthaceae Genus - Amaranthus       Taxonomic List List by Scientific Name Text Only List by Scientific Name |