Source : Webster's Revised Unabridged Dictionary (1913)

Lady's bedstraw \La"dy's bed"straw`\, (Bot.)
   The common bedstraw ({Galium verum}); also, a slender-leaved
   East Indian shrub ({Pharnaceum Mollugo}), with white flowers
   in umbels.

Maid's hair \Maid's" hair`\ (Bot.)
   The yellow bedstraw ({Galium verum}).

Bedstraw \Bed"straw`\, n.
   1. Straw put into a bed. --Bacon.

   2. (Bot.) A genus of slender herbs, usually with square
      stems, whorled leaves, and small white flowers.

   {Our Lady's bedstraw}, which has yellow flowers, is {Galium
      verum}.

   {White bedstraw} is {G. mollugo}.

Source : WordNet®

Galium verum
     n : common yellow-flowered perennial bedstraw; North America and
         Europe and Asia [syn: {yellow bedstraw}, {yellow cleavers},
          {Our Lady's bedstraw}]