TREES AND SHRUBS 



An evergreen tree, somewhat pyramidal ; Branches numerous, thickly 

 covered vpith slender, feathery, light-green branchlets. 



Introduced from Japan, 1850. Name Retinospora from Gr. rJietine, resin, and 

 sporos, seed, speiro, to sow, the seeds being coated with resin. Generic name 

 from L. pisum, a pea, and /fro, to bear. Syn. Chamcecyparis p'lsifcra. 



AMERICAN ARBOR-VITtE, Thuya occidentalis. 



Parks, gardens. April, May. Will thrive in damp soils. Pruning may 

 be done in April or September. The species are propagated by cuttings in 

 sandy soil under bell-glass or in cold frame in September ; seeds in sandy 

 soil in temperature of 55° in spring, transplanting to open ground when large 

 enough to handle. 



Flowers monoecious, minute, terminal, solitary, on different branchlets ; 

 3Iales ovoid, stamens 4-6, sub-orbicular, peltate, anther cells 2-4 ; Feinales 

 oblong, scales 8-12, oblong, acute, in opposite pairs, seminiferous scales 

 bearing 2 ovules ; Fruit a cone, ovoid-oblong, ,\-J in. long, pale cinnamon- 

 brown, scales oblong, acute, thin, coriaceous ; seeds ^ in. long, wings 

 thin. 



Leaves scale-like, decussate, acute, yellowish-green, j^^ in. long, on leading 

 shoots appressed or spreading, rounded or keeled on back, acuminate, usually 

 glandular, on laterals compressed, prominently keeled, brownish-green in 

 growing season, brownish-purple in winter. 



An evergreen sh?-ub or tree, 40-60 ft. ; Branches stout, distant, horizontal ; 

 branchlets spreading, lateral short and pendulous, yellow-green to cinnamon- 

 red, then dark orange-brown, smooth, lustrous ; Bark red-brown tinged orange, 

 fissured, scaly ; Wood light, soft, brittle, coarse-grained, durable, flagrant, 

 pale yellow-brown ; sometimes called AAHiite Cedar. 



Native of N. America; introduced 1596. Thuia is old Greek name used 

 by Theophrastus. 



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