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]

WordNet (r) 3.0 (2006):

Gaillardia pulchella
    n 1: annual of central United States having showy long-stalked
         yellow flower heads marked with scarlet or purple in the
         center [syn: blanket flower, Indian blanket, fire
         wheel, fire-wheel, Gaillardia pulchella]