CALIFORNIA BOX ELDER (_Acer negundo californicum_) is a variety of box elder, and not a separate species. As the name implies, it is a California tree, and it occurs in the valleys and among the Coast Range mountains from the lower Sacramento valley to the western slopes of the San Bernardino mountains. The tree is from twenty to fifty feet high and from ten to thirty inches in diameter. The leaves and young twigs are hairy, in that respect differing from the eastern box elder. The seeds are scattered during winter. The wood is very pale lemon-yellow or creamy-white, the heart and sapwood hardly distinguishable. The wood is soft and brittle, but is suited to the same purposes as the eastern box elder. No reports of its uses appear to have been made. It is found on the borders of streams and in the bottoms of moist canyons. It is believed to be a short-lived tree. STRIPED MAPLE (_Acer pennsylvanicum_) is usually thirty or forty feet high, and eight or ten inches in diameter. Its range extends from Quebec to northern Georgia, westward to Minnesota, and is of largest size on the slopes of Big Smoky mountains of Tennessee, and the Blue Ridge in North and South Carolina. It grows best in shade, but maintains itself in open ground; is generally shrubby in the northern part of its range. The name refers to the bark. The stripes are longitudinal and are caused by the parting of the outer bark and the exposure to view of the lighter colored inner layers. The bark of small trees is greenish, but later in life the color is darker, and the stripes largely disappear. Among its names are moosewood, so called because it is good browse for moose and other deer; goosefoot maple, a reference to the form of the leaf; whistlewood, an allusion to the ease with which the bark slips from young branches in spring when boys with jack-knives are on the search for whistle material. The names mountain alder and striped dogwood are based on misunderstanding of the tree’s family relations.