found: ITIS search, May 17, 2006(Calla L., genus in family Araceae, common name: callalily)
found: Amer. Hort. Soc. A-Z encyc. of garden plants, 2004(Calla, Araceae, genus of one species: C. palustris)
found: Plants national database via WWW, May 17, 2006(Calla L. common name: callalily)
found: Encyc. Americana(calla lily: a perennial South African plant grown for its ornamental blooms. Calla lilies belong to the genus Zantedeschia, a member of the arum family (Araceae), and are therefore not true lilies; nor should they be confused with the true Calla, a North American bog plant.)