58 ORNAMENTAL GARDENING. 



var. popiiUfoUa), sl rapid grower, with glossy, triangular 

 leaves, B. 



Yellow Birch {B. hitea), with golden-yellow bark, B. 

 The Low Birch {B. pumila), a shruby form, has numer- 

 ous, round, sharply-erenated leaves. 



The newly introduced species {B. costata), is a fine 

 tree of erect habit, with the branches somewhat droop- 

 ing, and with dark, heart-shaped leaves. 



The Indian Paper Birch [B. Bhojpaltra) is distinct, 

 of upright habit and with large, heart-shaped leaves. B, 



LOCUST. (Often called Acacia.) BoMnia. B.-D, 



The Black or Yellow Locust {R. Pseudacacia) is a 

 well-known native tree, with soft, graceful foliage, of 

 refreshing tint and yellowish-white, fragrant flowers ; of 

 only common value, B. There are a number of excellent 

 varieties of this, such as the Golden Locust (var. aurea), 

 a fine tree with golden-tinted foliage. Besson's Locust 

 (var. Bessoniana) is considered the best of the Locusts, 

 of upright growth, with luxuriant, dark-green foliage, 

 and is thornless, B. A variety called hullata is more 

 compact in growth, B. BeUa-rosea is a thornless variety 

 of vigorous habit, with delicate, flesh- colored flowers, 

 tinged with yellow, B. There are several varieties which 

 have a characteristically erect habit, among these are the 

 Pyramidal Locust {var pyramidalis), with dark foliage, 

 and one called fast iy lata, resembling the Lombardy 

 Poplar in form of growtli. The variety spectabilis is a sort 

 with straight, vigorous shoots and large leaves. There 

 are some varieties of a gobular form of growth, which 

 are quite distinct in appearance, namely : Globe or Par- 

 asol Locust (var. inermis) is a remarkably handsome, 

 thornless tree, that may by clipping be kept as round as 

 a ball, 7).; var. i7iermis riilra inonstrosa, a tree of 



