Zygocactus 'Christmas Cactus' • The Succulent Source

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.
Care: A Christmas cactus needs bright indirect light, regular watering when the soil dries a bit, and cooler nights to help it bloom.