Gasteria (Gasteria spp.) is a genus of relatively rare, aloe-like succulents. It sometimes goes by the common name of "ox tongue" because it typically has long leaves with a rough texture. Depending on the species, gasterialeaves also are often marked with interesting patterns and colors. Moreover, mature gasteria plants typically produce tubular, curved flowers in the winter to spring.
The genus is native to South Africa, where it grows in lightly shaded conditions. As a result, the plant tolerates lower light conditions than many other succulents do, making it a good option for a houseplant. Planting is best done in the spring, though you generally can start them as houseplants at any point. Gasteria is a slow-growing plant, and most varieties stay compact.