The Collaborative International Dictionary of English v.0.48:

firewheel \firewheel\ n.
   An annual of the central U. S. (Gaillardia pulchella)
   having showy long-stalked yellow flower heads marked with
   scarlet or purple in the center.

   Syn: blanket flower, Indian blanket, Gaillardia pulchella.
        [WordNet 1.5]