Basic Guidelines For English Spellings
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Any of various bulbous plants with showy flowers, especially the belladonna lily, Amaryllis belladonna, a clivia, Clivia miniata, and any of several crinums, all of the family Amaryllidaceae, and a wild gladiolus, Gladiolus natalensis.
Mid 19th century; earliest use found in Cape of Good Hope Almanac 1856.