I don't think it is, C comosum, they start off from the word go with the variegated leaves, which are more slender than the one you have - if you want some, I can send you some 'pups'
Perhaps C orchidastrum or C amaniense?
http://www.personalplantservice.com/pla ... der-plant/
Don't you like my word censor? Whistlers don't have a good set of initials!