The Christmas cactus, or Schlumbergera bridgesii, is a type of cactus native to Brazil. It is often grown as a houseplant due to its brightly colored flowers, which bloom during the holiday season. The plant is a popular holiday decoration, symbolizing hope and joy, and is often given as a gift during the Christmas season. It has also been used for medicinal purposes, such as treating diarrhea and nausea.