The name means Betrothal in French. The flowers start out green and develop into a good clear pink fading to a white centre and a pink eye. The sepals irregular and loose, broad and with a wavy edge when mature.
Gardens found in 28 pre 2000 surveys DA LHS TR MS & also LHS WIN TR WS RW ABJ as Franchailles
Gardens found in the 10 surveyed in 2010: DA LHS
UK Plant Finder 2012: Not listed.