dusty \dust"y\ du^st"y^, a. compar. dustier
   du^st"i^~er; superl. dustiest
   du^st"i^e^st. as. dystig. see dust.
   1. filled, covered, or sprinkled with dust; clouded with
      dust; as, a dusty table; a dusty attic; also, reducing to
      dust.
      1913 webster

            and all our yesterdays have lighted fools
            the way to dusty death.               --shak.
      1913 webster

   2. like dust; of the color of dust; as, a dusty white.
      1913 webster

   dusty miller bot., a plant cineraria maritima; -- so
      called because of the ashy-white coating of its leaves.
      1913 webster
see also:
dustier dustiest dust dusty miller cineraria maritima 

cineraria maritima
     n : stiff much-branched perennial of the mediterranean region
         having very white woolly stems and leaves; sometimes
         placed in genus cineraria syn: dusty miller, senecio
         cineraria
see also:
dusty miller senecio cineraria