- Botanical Name: Schlumbergera truncata
- Common Names: Zygocactus, Christmas Cactus
- Description: Zygocactus also known as Thanksgiving cactus, holiday cactus, or crab cactus. The crab name refers to the leaf-shaped stem segments that have curved, pointed teeth or claws along the edges. The Easter cactus (Schlumbergera buckleyi) has rounded edges on its leaf segments.