Callitris Quadrivalvis is also known as the blue pencil, the desert cypress, and the Turpentine tree. These names are given to this species of evergreen tree due to the various attributes that they possess. The blue pencil name comes from the distinct blue-grey color of the bark and wooden trunk, while the desert cypress name refers to its ability to thrive in arid desert regions. The Turpentine tree name is linked to the sap of the tree, which can be used to produce turpentine. These various synonyms demonstrate the versatility of this species and the different characteristics that make it stand out in its ecosystem.