Hymenocallis /ˌhaɪmɪnəˈkælɪs/[7] (US) or /ˌhaɪmɛnoʊˈkælɪs/[8] (UK) is a genus of flowering plants in the amaryllis family native to the Americas.

Some species are cultivated as ornamentals in warm nations around the globe, and a few have become naturalized in parts of Africa and on various tropical islands.

[6] Many of the species from the Caribbean and from the southeastern United States inhabit wet areas such as marshes, streambanks, and seashores.

It refers to the curious shape of the flowers, which consist of six narrow, curved petals attached to a shallow cup that is formed from the fused stamens.

Below are some examples of these species: It is closely related to Ismene, to which it shared a common ancestor 26.14 million years ago.