tithonia UK /tɪˈθəʊ.ni.ə/US /tɪˈθoʊ.ni.ə/ noun1 •Any member of the genus Tithonia of flowering plants in the sunflower tribe (Heliantheae) within the family Asteraceae.Many of our most popular flowers originated in Mexico including: marigolds, zinnias, nasturtiums, morning glories, cosmos, tithonias, sunflowers, verbenas, and many different sages. — 2000 formstithonias
