The Collaborative International Dictionary of English v.0.48:

Gnaphalium \Gna*pha"li*um\, n. [Nl., from Gr. ? wool of the
   teasel.] (Bot.)
   A genus of composite plants with white or colored dry and
   persistent involucres; a kind of everlasting.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Gnaphalium
    n 1: large widely distributed genus of coarse hairy herbs with
         whitish involucres [syn: Gnaphalium, genus Gnaphalium]