Named after the senior head gardener at theGraywoodHillGardeninEngland.  Sepals starting out cream the turning pale pinky-lilac fading to white at the centre.

Gardens found in 28 pre 2000 surveys DA  LHS WAK WIN EBGKEWABJ TR MS

Gardens found in the 10 surveyed in 2010: DA LHS ESV KAL AW

UK  Plant Finder 2012 = 2 nurseries