The Collaborative International Dictionary of English v.0.48:

lilyturf \lilyturf\ n.
   Asiatic perennial tufted herb (Liriope muscari) with
   grasslike evergreen foliage and clusters of dark mauve
   grapelike flowers; grown as ground cover.

   Syn: lily turf, Liriope muscari.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

lilyturf
    n 1: Asiatic perennial tufted herb with grasslike evergreen
         foliage and clusters of dark mauve grapelike flowers; grown
         as ground cover [syn: lilyturf, lily turf, Liriope
         muscari]