Sansevieria trifasciata - also called viper's bowstring hemp, Mother-in-law's tongue or Saint George's sword (in Brazil) is a species of plant in the family Asparagaceae, native to tropical West Africa from Nigeria east to the Congo.
The Mother-In-Law Tongue Plant Sushi is one of the most popular and best plants for improving indoor air quality by passively absorbing toxins such as nitrogen oxides and formaldehyde as well as producing natural negative ions, removing dirt and dust particles from your airspace (i.e. The Haze). Also said to promote a better sleeping environment as the negative ions makes dust particles heavier and settle down quickly.