👉 Tautulus is a type of plant that has a rigid, bony structure with a thin, fibrous outer layer and a thorny inner layer. These plants are commonly found in dry forests or near water sources due to their ability to absorb moisture from the soil. Tautuliuses can be found in various species, including the common tautulus (Centaurea), which is known for its large leaves that can grow up to 10 feet long.