Thuja n. (Written also thuya) (Bot.) A genus of evergreen trees, thickly branched, remarkable for the distichous arrangement of their branches, and having scalelike, closely imbricated, or compressed leaves. See Thyine wood. Note: Thuja occidentalis is the Arbor vitae of the Eastern and Northern United States. Thuja gigantea of North-western America is a very large tree, there called red cedar, and canoe cedar, and furnishes a useful timber.
... of some species most closely allied (for instance many species of crocus and European heaths) refusing to breed together, whereas other species, widely different, and even belonging to distinct genera, as the fowl and the peacock, pheasant and grouse{244}, Azalea and Rhododendron, Thuja and Juniperus, breeding together ought to have caused a doubt whether the sterility did not depend on other causes, distinct from a law, coincident with their creation. I may here remark that the fact whether one species will or will not breed with another is far less important than ... — The Foundations of the Origin of Species - Two Essays written in 1842 and 1844 • Charles Darwin Read full book for free!
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