196 



TREES OF THE NORTHERN UNITED STATES 



pressed, of a very dark, rich green color ; 

 very slightly glaucous, without tubercles 

 on the back. Cones small, globular, soli- 

 tary, with a fine, whitish bloom ; scales 4, 

 rough and terminating in a sharp straight 

 point. Tree 100 ft. high in Alaska, and 

 would make a fine cultivated tree for 

 this region if it could stand our hot, dry 

 summers. 



3. Chamaecyparis Lawsoniana, Park. 

 (LAWSON'S CYPRESS.) Leaves small, deep 

 green, with a whitish margin when young, 

 forming with the twigs feathery-like, flat spray of a bluish-green 

 color ; leaves usually with a gland on the back. Cones scarcely % 

 in. in diameter, of 8 to 10 scales. A mag- 

 nificent tree in California, and where it 

 is hardy (in rather moist soil, New-York 

 and south) it forms one of our best cul- 

 tivated evergreens. The leading shoot 

 when young is pendulous. 



C. Nutkffinsls. 



C. LawsoniiUaa. 



4. Chamsecyparis (B.etin6spora) ob- 



tusa, Endl. (JAPANESE ARBOR- VIT^E.) 



Leaves scale-formed, obtuse, closely ap- 



pressed and very persistent. Cones of 



8 or 10 hard, light brown, wedge-shaped 



scales. Beautiful small trees or generally 



shrubs (in this country), of a score of 



named varieties of many colors and forms of plant and foliage. 

 There are probably a number of species of Japanese and Chinese 

 Chamsecyparis (Retinospora), but till 

 their size, hardiness, and origin have 

 been more fully determined, it would 

 be impossible to make an entirely 

 satisfactory list for such a work 

 as this. Figures are given of the 

 common, so-called, species cultivat- 

 ed in this country; under each of 

 these, several varieties are sold by 

 the nurserymen. The three twigs 

 of Retinospora squarrosa were all 

 taken from a single branch ; this 

 K. obtusa. . shows how impossible it is to deter- 



