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longitudinal blackisb stripes. The leaves are large for the size of the 

 tree, with a rounded or heart-shaped base, and spreading into three 

 nearly equal short lobes. The fruit hangs in loose and graceful clusters, 

 and, like that of the sugar-maple, is not ripe until autumn. 



5th. The mountain maple, Acer spicatum. This species has much the 

 same range of growth as the preceding. It is a smaller tree, seldom at- 

 taining a height of over eight or ten feet, being of a bushy habit. The 

 leaves.are similar in form to those of the striped maple, but smaller 

 and more coarsely toothed on the margin. The tree or shrub is quite 

 ornamental and deserving of cultivation. It becomes more vigorous 

 and grows larger when grafted on the larger species. 



Cth. The ]iocky Mountain or currant maple, Acer glahrum, Torr., Acer 

 tripartitum^ Nutt. Thi^ is a small bushy maple, growing from four to ten 

 feet high, first occurring in the mountains of Colorado, thence extending 

 southward to New Mexico and Arizona, and westward to Nevada and 

 California. It has small, smooth, roundish, three-lobed or three-parted 

 leaves, somewhat resembling those of a currant. It generally produces 

 an abundance of fruit, which is about the size of fliat of the red maple. 

 It would make quite an ornamental shrub, and is deserving of cultiva- 

 tion. 



7th. The large-toothed maple, Acer f/randideniatum. This species is 

 found in the mountains of Nevada, thence extending northward to Ore- 

 gon. It is a small tree, of slim growth, commonly twenty feet high, but 

 sometimes attaining a height of thirty or forty feet, and one foot diam- 

 eter of trunk. The leaves are similar in shape to those of the hard 

 maple, but smaller and usually somewhat downy even when old. The 

 fruit is of medium size, with broad and somewhat spreading wings. 



8th. The round-leaved maple, Acer circinatum. This tree is common 

 in the forests of Oregon and Northern California. It does not have the 

 upright growth of other maples, but grows in clumps, several trunks 

 springing from one root, and spreading out in a broad curve, the long, 

 slender branches often arching to the ground, where they take root, and 

 form tangled clumps which offer serious impediment to travel in the 

 woods in which they occur. It seldom attains a greater diameter of 

 trunk than five or six inches, and a height of from fifteen to forty feet. 

 The wood is hard, heavy, and fine-grained. The leaves have about 

 seven principal ribs, spreading out fan -like from the base to the circum- 

 ference, united together more than half way, and terminating in about 

 seven narrow lobes. 



9th. The great-leaved maple, Acer macrophyllum. This is a native of 

 California and Oregon. In the latter State it appears to attain its great- 

 est magnitude, reaching, according to Nuttall, a height of fifty to ninety 

 feet and a circumference of trunk of eight to sixteen feet. Like the 

 sugar-maple, it abounds in a sugary sap, which, however, has not been 

 utilized. Its wood is close-grained, hard, and shows freely those peculiar 

 undulations of the grain which are called curled and bird's-eye maple. 

 The leaves are large, not unfrequently a foot long, and deeply palmately 

 five-lobed. The flowers are rather conspicuous, of a yellowish color, in 

 drooping racemes, and somewhat fragrant. When in bloom it presents 

 a very attractive appearance. The fruit or seed-carpels are larger than 

 those of any other American maple, and are covered even when ripe with 

 strong, stiff hairs, and hang late upon the tree in conspicuous drooping 

 racemes. This species has been introduced into England, and there 

 makes a fine ornamental tree. It is a pity that it is so little known in 

 this portion of the United States. 



