Lithops bromfieldii
Lithops bromfieldii, also called the living stone, is a succulent plant in the genus Lithops. It is native to the Northern Cape Province of South Africa. The plant is tan and reddish brown, and looks like stones when not in bloom. It blooms in the fall. Flowers are yellow. References

bromfieldii
Endemic flora of the Cape Provinces
Taxa named by Louisa Bolus