I'm making a list. It's actually not about Christmas, it's about plants which have inspired names. I'm not including names of sprites, fairies, hobbits or other fictional characters, or animals (such as Petunia) unless they have also been given to humans. Besides Holly and Ivy, there's Heather, Fern, Laurel, Myrtle, Willow, Rowan, Linden, Daisy, Rose, Lily, Violet, Clover, Daphne, Jasmine, and my one contribution to behindthename.......ah yes, Salal. Any others?