Named after the Swiss mountain.  A dwarf cultivar with deep pink, entire sepals that are clearly separated at the base. (description ofDerbyplants)

Gardens found in 28 pre 2000 surveys DA  LHS WIN TR WS RW ABJ

Gardens found in the 10 surveyed in 2010: DA LHS NAN

UK  Plant Finder 2012: Not listed.   waysidegardencentre.com) 2009