old maid flower
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|Noun||1.||old maid flower - any of various plants of the genus Zinnia cultivated for their variously and brightly colored flower heads|
flower - a plant cultivated for its blooms or blossoms
genus Zinnia - genus of annual or perennial plants of tropical America having solitary heads of brightly colored flowers
white zinnia, Zinnia acerosa - subshrub with slender woolly stems and long narrow leaves and flower heads with white rays; southern United States and northern Mexico