EVERGREEN" TREES AND SHRUBS. 103 



(var. Cla7ihrasiliana)f very dwarf and symmetrical, with 

 small foliage, one of the most valuable of the very small 

 Spruces. Ellwanger's Dwarf Spruce (var. Ellivangeriana), 

 a distiuct and valuable variety ; the leaves project in a 

 bristle-like manner. Gregory's Dwarf S]3ruce (var. Greg- 

 oria?ia), hemispherical, very dense, an excellent small 

 dwarf. Maxwell's Dwarf Spruce (var. Maxwelliana)^ 

 dwarf, compact and regular, forms a dense, hemispheri- 

 cal mass. Small-formed Sjorace (var. parvifoi'm'is)^ 

 small and distinct. Conical Spruce (var. conica), dense, 

 conical-form ; valuable. Pigmy Dwarf Spruce (var. 

 pygmma), the dwarfest form of the Spruces. The var. 

 tortuosa compact a is of dwarf, spreading habit, with the 

 young branches curiously twisted. 



The White Spruce (.4. alba) is another sj^ecies of 

 compact growth, with light-colored bark, and foliage of 

 a light glaucous green, B. There arc several varie- 

 ties embracing the Glaucous Spruce (var. coiriilea), a 

 small and beautiful tree, with bluish-green foliage, and 

 spreading habit. Dwarf White Spruce (vr.r. nana), of 

 small, compact form, but resembling the species in other 

 respects. 



The Black Spruce (A. nigra) is a native species, of 

 no high merit for ornament. The Dwarf Black Sjiruce 

 (var. pumila) is a fine dwarf variety, forming a cushion 

 or ball of small, dark-green foliage, //. Doumet's Spruce 

 (Doiimeti) is another handsome dwarf variety, of com- 

 pact growth and bluish leaves. 



Alcock's Spruce {A. Alcoqiiiana) is a distinct species 

 from Japan, not thoroughly tested yet, but promising 

 well ; deep-green, glaucous leaves. 



Menzies' Spruce or Colorado Blue Spruce {A. 

 Mefiziesii), one of the hardiest and most beautiful species, 

 until it attains to about thirty feet in higlit ; compact, 

 with broad, sharj)ly-pointed, bright, bluish-gray leaves,^4. 



