Dracaena trifasciata is a species of flowering plant in the family Asparagaceae, native to tropical West Africa from Nigeria east to the Congo. It is most commonly known as the snake plant, Saint George's sword, mother-in-law's tongue, and viper's bowstring hemp, among other names.
Snake plant medicinal benefits include removing indoor air pollutants (such as formaldehyde and benzene) and helping to filter out impurities such as xylene, trichloroethylene, toluene, and ammonia. The snake plant can remove up to 87% of these harmful toxins at night. It can also reduce the level of nitrate ions. (Source: The internet)