The Collaborative International Dictionary of English v.0.48:

weeping love grass \weeping love grass\ n.
   a perennial South African grass (Eragrostis curvula) having
   densly clumped flimsy stems; introduced into U.S. esp. for
   erosion control.

   Syn: African love grass.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

weeping love grass
    n 1: perennial South African grass having densely clumped flimsy
         stems; introduced into United States especially for erosion
         control [syn: weeping love grass, African love grass,
         Eragrostis curvula]