That's Kalanchoe. Box turtles probably won't eat it, but its a lovely plant. Some varieties of kalanchoe (for example, mother of millions) are toxic, but some are edible. I wouldn't worry about it. This is a beautiful plant and will add to your enclosure.
It is sedum or hens and chicks but most Likely sedum and no I don't think box turtles will eat them because I let mine go in the flower bed and he doesn't mess with them
Sedum has smaller leaves, and there are tons of varieties of hens and chicks. I agree with Yvonne those flowers say kalanchoe. There are also tons of sedum varities, only one that I know of is toxic. My torts love the 2 sedums that I grow.
I put it with a couple Unbrella plants (Schefflera arboricola), Dracaena(3 types), English Primrose (Primula vulgaris), Boston Fern. Walmart has a clearance in their plant section. I believe their all non-toxic to box turtle and so far she has not tried to eat any of the plants currently in her enclosure. Although she knocks things down and bulldozes stuff around.
I want to keep rotating Cleos plant as she abuses them. Should be fun.
I love houseplants and I want to collect only plants that are safe. In case the parrots or the turtle wants to snack.