Spathiphyllum
Spathiphyllum is commonly grown as a houseplant. There are many cultivars. As houseplants, they are said to have an air-cleaning effect. They are very toxic to cats and dogs, but only milly toxic to humans and other animals. Spathiphyllum species contain Calcium oxalate, which may cause skin irritations, a burning sensation  and difficulty swallowing. They are not as toxic as the true lilies.