=Upas= (_Antiaris toxicaria_). A tree found in the Philippine Islands and tropical Asia. The fiber of the bark is sometimes made into cloth and the juice of the roots is used by the Malays for poisoning their arrows. This tree figures in both religion and mythology.
=Walnut= (_Juglans_), a genus of about ten species, mostly natives of North America and Asia. The BLACK WALNUT is sometimes one hundred to one hundred and twenty-five feet high, growing from Ontario to Florida, west to Nebraska and Texas. The dark brown wood is largely used for cabinet making and gunstocks. The WHITE WALNUT or BUTTERNUT resembles the black walnut, but is seldom over one hundred feet high. The wood is used in the interior finish of houses and for furniture. The CALIFORNIA WALNUT, a tree sometimes sixty-five feet high, is often cultivated in California for shade and as a stock on which to graft the English Walnut. The ENGLISH WALNUT is sixty to ninety feet high, native of Persia, and has long been cultivated for its edible nuts.
=Willow= (_Salix_), a genus of over one hundred and fifty species, mostly of cool, northern regions, fully one-half occurring within the United States. The leaves are egg-shaped and wrinkled; the blossoms yellow and greenish. They possess great quantities of honey, and attract, therefore, all kinds of insects, especially bees. The WEEPING WILLOW is much planted for ornament. The EUROPEAN OSIER is cultivated for its twigs. Of the native species, the shrubby SHINING WILLOW, the BLACK WILLOW, is sometimes forty feet high, and the HEART-LEAVED WILLOW are among the best known.
=Yew= (_Taxus_), a genus of some six trees and shrubs, are widely distributed in the northern hemisphere, three species occurring in the United States. The AMERICAN YEW is a low, straggling shrub seldom over five feet high growing in woods from Newfoundland to Manitoba and south to Virginia and Iowa. The FLORIDA YEW is a bushy tree rarely twenty-five feet high. The CALIFORNIA YEW is a tree forty to fifty feet high occurring from British Columbia to California, sometimes cultivated in gardens in Europe. The hard wood is used for fence posts. The EUROPEAN YEW is a native of Europe and Siberia reaching a height of forty feet.