Class XXI. Order IX. 361 



winter. They grow in tufts or fascicles, on the sides of the 

 branches, which are mostly horizontal. The tree flowers with 

 small aments, the barren ones containing two anthers under each 

 scale, and the fertile ones two germs. These last are succeed- 

 ed by small cones, with soft scales, inflected at the edge. Seeds 

 small, winged. This tree attains the height of eighty or ninety 

 feet. Its wood is strong and durable, and is used in ship build- 

 ing. It frequents a low, moist soil. 



419. CUPRESSUS. 

 CUPHESSUS THUYOIDES. L. JVIiite Cedar. 



Branchlets compressed ; leaves in four rows, imbri- 

 cated, ovate, tuberculated at base. Willd. 



The White Cedar grows naturally in wet situations, some- 

 limes occupying considerable tracts of marshy land, known by the 

 name of Cedar swamps. The small branches are finely subdivid- 

 ed, their List divisions compressed, and covered by four rows of 

 short, minute leaves, the two lateral rows longest. Each leaf is 

 furnished with a minute tubercle or gland on the back, near its 

 base. Cones extremely small, angular, and somewhat spherical. 



The wood is light, soft, and very durable. It is used for 

 shingles, for wooden vessels, also for fencing and other purposes 

 where durability is required. This tree and the last are found 

 occasionally, but not frequently, in the neighbourhood of Boston. 



420. THUYA. 

 THUYA OCCIDENTALIS. L. Arbor vita. Hacmataclc . 



Branchlets ancipital ; leaves imbricate four ways, 

 ovate-rhomboidal, appressed, naked, tuberculated ; 

 cones obovate, the inner scales truncated, and gibbous 

 below the tip. 



This tree, remarkable for the flat or two edged form of its 

 twigs, is known in different parts of the country by the name of 

 White Cedar and Hacmatack. The twiga are much broader than 

 those of Cupressus Thuyoides, the cone loose with few long 

 scales, unlike the globular fruit of the Cedar. Wood soft, but 

 very durable. In Maine, New Hampshire. 

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