Sanseveria is a historically recognized genus of flowering plants, native to Africa, notably Madagascar, and southern Asia. They have now been included in the genus Dracaena on the basis of molecular phylogenetic studies but most people would still consider them separate and Sanseveria is the name that is predominantly used in cultivation. Mother-in-laws tongue or Snake plant is the name that many nurseries use for the more common species of the genus.
Sanseveria has around 70 or so species with many new cultivars. Many of these cultivars are variegated and are being bred in Asia. Sanseveria are very easy in cultivation and are tolerant of a variety of conditions. This makes them ideal as house plants and great for beginners. Experienced collectors will find this genus rewarding as there is many rare and variegated species.