Thuja (from Latin for “tree of life”) is a genus of coniferous trees in the Cupressaceae (cypress family). There are five species in the genus, two native to North America and three native to eastern Asia. The genus is monophyletic and sister to Thujopsis. The name Thuja was given to this group of trees by the Swedish botanist Carl von Linné in 1753. In Greek mythology, Thyia (Ancient Greek: Thyía “Θυία”) was the name of a female figure associated with cults of several major gods. "Thyia" was derived from the Ancient Greek verb “thýo̱ (θύω)”, meaning "to sacrifice". The name was applied to a type of fragrant tree called a Thuja.