rockrose

from WordNet (r) 3.0 (2006)

rockrose
    n 1: any of numerous varieties of helianthemums having small
         rose-like yellow or white or reddish flowers [syn:
         {rockrose}, {rock rose}]
    2: small shrubs of scrub and dry woodland regions of southern
       Europe and North Africa; grown for their showy flowers and
       soft often downy and aromatic evergreen foliage [syn:
       {rockrose}, {rock rose}]

from The Collaborative International Dictionary of English v.0.48

Rockrose \Rock"rose`\, n. (Bot.)
   A name given to any species of the genus {Helianthemum}, low
   shrubs or herbs with yellow flowers, especially the European
   {Helianthemum vulgare} and the American frostweed,
   {Helianthemum Canadense}.
   [1913 Webster]

   {Cretan rockrose}, a related shrub ({Cistus Creticus}), one
      of the plants yielding the fragrant gum called {ladanum}.
      [1913 Webster]