The term SHOWY WHITE FLOWER can be solved by two crossword solutions: CALLA (5 letters) and CAMELLIA (8 letters). CALLA is a genus of flowering plants in the family Araceae, native to southern Africa. It is a popular ornamental plant, with showy white flowers. CAMELLIA is a genus of flowering plants in the family Theaceae, native to eastern and southern Asia. It is also a popular ornamental plant, with showy white flowers.