Crinum is a genus of about 180 species of perennial plants that have large showy flowers on leafless stems, and develop from bulbs. They are found in seasonally moist areas, including marshes, swamps, depressions and along the sides of streams and lakes in tropical and subtropical areas worldwide. Crinum leaves are basal, typically long and strap-shaped, with colors ranging from light green to green. Several species are used in aquariums. In Hawaiʻi Crinum augustum (or Crinum amabile var augustum) is known as the Queen Emma Lily.