The Snake Plant 'Laurentii' (Dracaena trifasciata 'Laurentii'), or Striped Mother-in-Law's Tongue, is an evergreen with sword-shaped leaves featuring dark green-gray bands and yellow edges.  This unique house plant is loved by the masses because of its low maintenance, resilience, and air purifying characteristics. Native to tropical West Africa is a member of the Asparagaceae family and is characterized by its stiff, upright, sword-like leaves.  This plant is toxic to children and pets.