Genus Thuja
Thuja The genus is monophyletic and sister to Thujopsis.Species in the genus Thuja of plants
Thuja koraiensis - It is an evergreen shrub or small tree growing to 3-10 m tall. The foliage forms flat sprays with scale-like leaves 2-4 mm long , matt dark green above, and with broad, vivid white stomatal wax bands below. The cones are oval, yellow-green ripening red-brown, 7-11 mm long and 4-5 mm broad , with 8-12 overlapping scales.
Arborvitae - Common names include: Tree of Life, Yellow Cedar, American Arborvitae, Arbor Vitae, Atlantic White Cedar, Cedrus Lycea, Eastern White Cedar, False White Cedar, Hackmatack, Lebensbaum, Thuia du Canada, Thuja.
Western redcedar - It is a large to very large tree, ranging up to 65–70 metres tall and 3–4 metres in trunk diameter, exceptionally even larger.
Thuja standishii - The foliage forms in flat sprays with scale-like leaves 2-4 mm long, matte green above, and with narrow white stomatal bands below. The cones are oval, yellow-green ripening red-brown, 6-12 mm long and 4-5 mm broad , with 6-10 overlapping scales.
Thuja sutchuenensis - It is a small or medium-sized tree, reaching possibly 20 m tall, though no trees of this size are currently known. The foliage forms in flat sprays with scale-like leaves 1.5-4 mm long, green above, and with narrow white stomatal bands below. The cones are oval, green ripening brown, 5-8 mm long and 3-4.2 mm broad , with 8-10 overlapping scales.