Eustoma would be the genus and grandiflorum the species, but grandiflorum is no longer a valid name. It is now called exaltatum. Cinderella double lime would be the cultivar. There is a (Eustoma exaltatum subsp. russellianum 'Cinderella Lime') in the database, no double. I did a search and I don't think double is part of the name. 'Cinderella Lime' is a double flower.
