14 Select Plants for Industrial Culture and 



Acer dasycarpum, Ehrhart. (A. saccharinum, Linne.) 



The Silver-Maple of North-America. Requires a rather warmer 

 climate than most other American maples, but has proved hardy in 

 Norway as far as 59 55 / N. [Schuebeler]. Height reaching 50 

 feet ; stem sometimes 9 feet in diameter. Much praised for street- 

 planting ; growth comparatively rapid. It produces 110 suckers, 

 nor is the tree subject to disease. A most beautiful tree, with a 

 .stout stem and a magnificent crown, growing best on the banks of 

 rivers with limpid water and a gravelly bed, but never in swampy 

 ground, where the Bed Maple takes its place. Excellent trees can 

 be raised from cuttings of this and some other congeners. The 

 wood is pale and soft, of less strength and durability than that of 

 many of its congeners, but makes excellent charcoal. It may be 

 cut into extreme thinness for wood-paperhangings [Simmonds]. 

 The tree also yields maple-sugar, though not in such quantity as 

 A. nigTum. With other maples, an early yielder of honey to bees. 

 The specific name, given by Linne, has priority, but does not apply 

 to the best Sugar Maple. 



Acer macrophyllum, Pursh. 



Large Oregon-Maple. From British Columbia to Northern 

 Mexico. A fine shade-tree of quick growth ; sometimes reaching 

 .a height of 90 feet ; stem attaining 16 feet in circumference ; 

 delights on banks of streams. The inner bark can be utilized for 

 baskets, hats and superior mats ; the hard and close wood is a sub- 

 stitute for hickory. It is whitish, beautifully streaked when curled. 

 Splendid for ornamental work. Maple-sugar is also manufactured 

 from the sap of this species [Sargent]. 



Acer Meg'Undo, Linne. (Negundo aceroides, Moench.) 



The Box-elder of North- America. Hardy in Norway to 59 55 ' 

 N. [Schuebeler]. A tree, deciduous like the rest of the maples; 

 may attain a height of about 50 feet ; it is rich in saccharine sap ; 

 according to Vasey it contains almost as much as the Sugar-maple. 

 In California it is used extensively as a shade-tree. Cultivated, 

 the stem attains about 8 inches in diameter in 8 years [Brewer]. 

 The wood is yellow, marked with violet and rosy streaks [Sim- 

 monds]. Bate of growth for stem-girth in Nebraska about 2 feet 

 in fourteen years [Governor Furnas]. 



Acer nigrrum, Michaux.* (A. saccharinum, Wangenheim.) 



The Sugar- or Bock-Maple. Eastern North -America, extending 

 to Arizona. One of the largest of the genus. It is the national 



emblem of Canada. In the cooler latitudes often 80 or rarely 120 

 feet high, with a stem 3 or 4 feet in diameter. Hardy to 59 55' N. 

 in Norway [Schuebeler]. Likes a deeply friable soil and cool moist 

 positions. The wood is strong, tough, hard, close-grained, of rosy 

 tinge, and when well seasoned is used for axle-trees, spokes, shafts, 



