CONIFERS 261 
Endures moist, upland soils, but with slow growth. 
Very shade-enduring; easy to propagate from seed. 
22. Yrttow Cepar (Chamecyparis nootkatensis 
Lamb.; Spach). Height, 150 feet +; diameter, 5 
feet +. Northwest coast region, from Mount Jef- 
ferson northward. Most common on the seacoast 
north of United States boundary. Like arbor vite. 
23. Arpor Virm (White Cedar) (Thuja occi- 
dentals Linn.). Height, 50 feet +; diameter, 11 
feet. Northeastern States and northward. Will 
grow well in any soil not too stiff, often forming 
dense, pure growths in wet, boggy swamps. Rapid 
grower ; easily propagated ; desirable for under- 
growth and to fill out places where other trees fail 
to come. 
24. Giant Arpor Virm® (Red Cedar; Yellow 
Cedar) (Thuja plicata Don.). Height, 150 feet +; 
diameter, 9 feet +. Northwestern coast and from 
Humboldt, Cal., to British Columbia. Best develop- 
ment north of Seattle. Like the above species on 
Pacific coast. 
25. Repwoop (Sequoia sempervirens Endl.). 
Height, 300 feet +; diameter, 20 feet +. California 
coast from Oregon southward; forest-forming. Low, 
moist, well-drained situations and damp climate; not 
on dry hillsides. Vigorous and persistent grower; 
shade-enduring; sprouts from the stump. Highly im- 
