Amaryllis (/ˌæməˈrɪlɪs/) is the only genus in the subtribe Amaryllidinae (tribe Amaryllideae). It is a small genus of flowering bulbs, with two species. The better known of the two, Amaryllis belladonna, is a native of the Western Cape region of South Africa, particularly the rocky southwest area between the Olifants River Valley and Knysna.
For many years there was confusion among botanists over the generic names Amaryllis and Hippeastrum, one result of which is that the common name 'amaryllis' is mainly used for cultivars of the genus Hippeastrum, widely sold in the winter months for their ability to bloom indoors.