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Noun: black-eyed Susan
  1. Tropical African climbing plant having yellow flowers with a dark purple centre
    - black-eyed Susan vine, Thunbergia alata
     
  2. The state flower of Maryland; of central and southeastern United States; having daisylike flowers with dark centres and yellow to orange rays
    - Rudbeckia hirta, Rudbeckia serotina
     
  3. Annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America
    - flower-of-an-hour, flowers-of-an-hour, bladder ketmia, Hibiscus trionum

Derived forms: black-eyed Susans

Type of: coneflower, hibiscus, vine

Part of: genus Rudbeckia, genus Thunbergia, Rudbeckia, Thunbergia

Encyclopedia: Black-eyed Susan