340 WEEDS AND USEFUL PLANTS. 



4 anther-cells. FERTILE AMENTS with the scales imbricated, fixed by the 

 base, each bearing 2 erect ovules, dry and spreading at maturity. Co- 

 tyledons 2. Leaves evergreen, very short, appressed and imbricated on 

 the flattened branches. 



1. T. occidentals, L. Branches spreading ; leaves closely appressed, 

 rounded on the back ; cones ovoid-oblong, scales obtuse, pointless. 



WESTERN THUJA. American Arbor-Yitse. 



Stem 20-50 feet high, with a conical top ; young branches 2-edged, diverging horizontally. 

 Cones half an inch long, in racemose clusters on the recurved brauchlets ; scales 1-soeded ; 

 Seed broadly winged. 



New England and northwest. 



Obs. This is a native of the cooler parts of the country and is fre- 

 quently cultivated as an ornamental evergreen. In the North it is 

 regarded as a valuable tree for its timber, which is very durable, though 

 difficult to procure of any great length. 



2. T. ORIENTA'LIS, L. Branches erect ; leaves slightly sulcate in the 

 middle ; cones roundish-ovoid or obovoid, erect ; scales acute with con- 

 spicuous recurved or spreading points. 



EASTERN THUJA. Chinese Arbor-Yite. 



Stem 10 - 20 feet high, usually of a shrub-like habit, with numerous erect branches from 

 near the base especially when young ; brandies diverging vertically or fan-like, with the 

 edges up and down. Cones sub-solitary, about half an inch long, deep green and glaucous. 



Cultivated. Native of China and Japan. 



Obs. This is a much smaller tree than the preceding, its foliage and 

 cones of much deeper green. It is often used for an ornamental hedge ; 

 and it is decidedly better for show than for service. 



5. CUPEES'SUS, Tournef. CYPRESS. 



[The classical name.] 



Flowers monoecious on different branches, in terminal small aments. 

 STERILE AMENTS of shield-shaped scales bearing 2-4 anther-cells under 

 the lower margin. FERTILE AMENTS globular, of shield-shaped scales in 

 4 ranks, bearing several erect bottle-shaped ovules. Cones globular, 

 firmly closed, but opening at maturity ; the scales thick and woody, 

 pointed in the middle ; the few or several narrowly-winged seeds at- 

 tached to their base or stalk. Cotyledons 2-3. Strong-scented ever- 

 green trees, with very small and scale-like closely appressed imbricated 

 leaves and exceedingly durable wood. 



1. C, thyoi'des, L. Leaves minute, ovate, with a small gland on the 

 back, closely imbricated in 4 rows on the 2-edged branchlets. 



THUJA-LIKE CUPRESSUS. White Cedar. 



