The botanist will tell us that the yew (_Taxus baccata_) is a fine-grained, slow-growing tree belonging to the sub-division Taxineae of the Natural Order Coniferae, or Pinaceae. Its timber is tough, durable, and elastic, so that there is some truth in the New Forest proverb: “A post of yew will outlast a post of iron.” The trunk of the yew is deeply channelled, and its reddish-brown bark easily peels off. Looking at the narrow, leathery leaves, which are dark and glossy on the upper surface, but rather pale on the undersides, one might casually conclude that they are arranged in two rows on opposite sides of the twig. Closer inspection, however, proves that the leaves spring from all sides of the axis, but that a twist at the base of each leaf gives a false appearance of a plain double series[935]. The yew is dioecious, that is, the male and the female flowers grow on separate trees, but occasionally both kinds of inflorescence may be seen on the same tree. Over a large area of the Northern Hemisphere our familiar yew is met with, and an allied species grows in North-East America and Japan. The columnar variety (var. _fastigiata_), known as the Irish, or Florence Court yew, is said to have originated as a wild sport at Florence Court, in county Fermanagh, about 130 years ago[936]. Its outline looks very unlike that of the common yew, which has horizontal branches, and it has no further practical bearing on our subject. It is important to note that the yew is demonstrably indigenous to Britain. It can be traced back not merely to the Neolithic Age[937], but even to the Glacial period[938]; hence there need be no debate concerning its possible introduction in later times.