- Thuja, genus Thuja - red cedar
--1 is a kind of gymnosperm genus
--1 is a member of Cupressaceae, family Cupressaceae, cypress family
--1 has members:western red cedar, red cedar, canoe cedar, Thuja plicata; American arborvitae, northern white cedar, white cedar, Thuja occidentalis; Oriental arborvitae, Thuja orientalis, Platycladus orientalis