6 MASS. EXPERIMENT STATION BULLETIN 345 



Acer japonicum var. aconitlfolium (var. Parsonsii) FERNLEAF MaPLE 



This species is usually seen in cultivation as a large, bare-based shrub with 

 grayish wood and deeply divided, light-green leaves, which may be looked 

 upon as a somewhat over-sized but not bright-colored "Japanese" Maple. Not 

 a plant for cold inland locations. 



Acer Negundo Box ELDER 



A hardy, quick-growing, variable, native Maple which is now considered to 

 be of little ornamental value. Its ability to withstand trying atmospheric and 

 soil conditions makes it useful at times for screen planting. 



Acer palmatum JAPANESE MaPLE 



A large shrub or a small tree with a broad, low head of not more than about 

 fifteen feet in diameter. This is the pleasant, green-leaved form of a variable 

 species having numerous garden varieties which are based on color or shape 

 of the leaves. While these varieties, particularly those which differ only in 

 intensity of red leaf coloration, are separated in botanical collections, they are 

 now much confused in commerce. Much of the nursery material consists of a 

 mixed lot of selected seedlings on which the leaves are red in the spring but 

 become green as the season advances. The cut-leaf forms are propagated 

 vegetatively and, while not varying in appearance, have their names confused. 

 Such material should be bought only on inspection and, because of possible 

 garden redundancy, planted thoughtfully. 



Acer pennsylvanicum STRIPED MaPLE 



A native tree growing to some forty feet, which owes its possible value for 

 use in wild woodland development to the winter effect of its white-striped 

 greenish stems. 



ACER PLA.TANOIDES Norway Maple 



This commonly planted Maple, with its spring show of yellowish flowers, 

 later canopy of dark-green, lustrous leaves, and stocky symmetrical crown, 

 has been much planted as a street tree. If given ample root run in loose, moist 

 soil, it will develop into a fine older plant. Not so, however, will be its behavior 

 if crowded into a narrow space in sterile soil. Like the Sugar Maple, its roots 

 and shade will interfere with grass or smaller plants placed beneath it. Var. 

 COLUMN ARE is one of the several fastigiate plants deserving of greater use 

 for tall, narrow screens in place of the Lombardy Poplar. 



ACER RUBRUM Red MaPLE 



This is the fast-growing inhabitant of moist soils which, with its red flowers 

 of early spring and red or yellow autumn foliage, is such a real part of the native 

 landscape. In cultivation it can be used on fertile, higher soils. It is not so 

 intolerant of undergrowth as are some of the other large Maples. Var. 

 COLUMNARE develops into a broad column. Var. schlesingeri represents a 

 clon, the leaves of which invariably turn a brilliant scarlet in autumn. 



ACER SACCHARUM Sugar Maple 



The well-known hard Maple with a many-branched, broad, symmetrical 

 head, rough bark, and dense, light-green foliage which turns yellow or some- 

 times red in autumn. Not a tree for limited areas on poor soil where its 

 voracious roots and deep shade will discourage underplanting. Some species 

 of the genus Sedum are often used beneath it in place of grass. Var. MONU- 

 MENTALE, with ascending branches, forms a very slender column of far 

 more permanence than the pest-ridden Lombardy Poplar. 



