Hydnophytum papuanum aka “ant plant” is an epiphytic plant with a caudex that has a maze inside if it that ants colonize. It benefits from this in multiple ways. I know its
Papua Ant Farm Plant - Hydnophytum papuanum - Easy to Grow House Plant - 5" Pot - Walmart.com
Hydnophytum papuanum | Maze/Ant Plant | Gateway Garden Center