The Collaborative International Dictionary of English v.0.48:

flannelbush \flannelbush\, flannelbush \flannelbush\n. (Bot.)
   any of several handsome evergreen shrubs of California and
   Northern Mexico having downy lobed leaves and showy yellow
   flowers.

   Syn: California beauty.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

flannelbush
    n 1: any of several handsome evergreen shrubs of California and
         northern Mexico having downy lobed leaves and showy yellow
         flowers [syn: flannelbush, flannel bush, California
         beauty]