WordNet (r) 3.0 (2006):

Galium odoratum
    n 1: Old World fragrant stoloniferous perennial having small
         white flowers and narrow leaves used as flavoring and in
         sachets; widely cultivated as a ground cover; in some
         classifications placed in genus Asperula [syn: sweet
         woodruff, waldmeister, woodruff, fragrant bedstraw,
         Galium odoratum, Asperula odorata]