i 4 o TREES GROWING IN MOIST SOIL. 



WESTERN LOCUST. {Plate LXVII.) 

 Robinia Neo-Mexicana. 



FAMILY SHAPE HEIGHT RANGE TIME OF BLOOM 



Pea. Spreading. 10-25 feet. Colorado to New Mexico May. 



and westward. 



Bark: light brown; rough and scaly. Stipules: developing later into spines. 

 Leaves : compound; alternate; with long pubescent petioles and having from 

 fifteen to twenty-one leaflets; oblong-elliptical, rounded or pointed at the apex 

 and rounded at the base; entire; bluish green and glabrous above, slightly 

 pubescent on the lower sides of the veins and midrib. Flowers : rose colour; 

 or nearly white, growing in short, compact racemes. Calyx : hairy. Corolla : 

 papilionaceous, the standard low and broad. Legumes: linear; curving; 

 pointed at the lower end and covered with bristly hairs. Seeds : dark brown. 



There is something particularly distinct and beautiful about 

 all of the locusts ; and if we have followed only one of them in 

 its course of development from the early swelling of its buds to 

 the change and oxidation of its leaves in the autumn, it is only 

 reasonable to feel ourselves somewhat in harmony with the 

 whole genus. It then becomes a matter of intense interest to 

 note the smallest variation in flower or foliage or fruit that 

 aids to distinguish one species from another. 



In Colorado only, does Robinia Neo -Mexicana become a tree ; 

 in other places it occurs as a shrub. Through cultivation it is 

 becoming familiar, and it is quite hardy in New England. Time 

 however is required for it to regard the nearness of man with 

 fearlessness. Its instincts warn it, like those of the savage, to 

 be on the defensive. We notice therefore that it is most 

 abundantly supplied with sharp spines. Along the banks of 

 wild mountain streams in its natural habitat these were its 

 faithful weapons and protected its buds and bark from the 

 ravages of small animals. 



AMERICAN MOUNTAIN ASH. ROWAN TREE. 

 AMERICAN SERVICE TREE. {Plate LXVIII.) 



Sdrbus Americana. 



FAMILY SHAPE HEIGHT RANGE TIME OF BLOOM 



Apple. Almost pyramidal^ ro-yafeet. New Foundland westward May, June. 



slender. and southward along the Fruit: Sept. 



Alleghanies. 



Bark : dull brown; almost smooth; odour, astringent. Leaves: compouiuJ: 

 alternate; odd-pinnate; with red, grooved stalks and from nine to seventeen 



