Pinus. CONIFERS. 



121 



through the mountains of Idaho, Montana, Wyoming, Colorado, and 

 Utah to New Mexico and northern Arizona. 



A tree 18 to -21 metres in height, with a trunk 0.60 to 1.20 metres in 

 diameter; reaching its greatest development in the California Sierras; in 

 the interior regions in dry, gravelly soil, here the prevailing tree, cover- 

 ing immense areas, and generally replacing other species destroyed by 

 fire ; western Washington and southward only along the borders of moist 

 alpine meadows between 6,000 and 9,000 feet elevation. 



Wood light, soft, not strong, close, straight-grained, easily worked, com- 

 pact, not durable ; bands of small summer cells narrow, not conspicuous ; 

 resin passages few, not large ; medullary rays numerous, obscure ; color 

 light yellow or nearly white, the thin sap-wood lighter; occasionally 

 manufactured into lumber, and used for fuel, railway-ties, etc. 



366. Pinus Sabiniana, Dougl. 

 Digger Pine. Bull Pine. 



California, — Shasta County, south along the foot-hills of the Coast 

 Ranges and the western slope of the Sierra Nevada below 4,000 feet 

 elevation. 



A large tree, 24 to 30 metres in height, with a trunk 0.60 to 1.20 

 metres in diameter ; very common through all the foot-hills region. 



Wood light, soft, not strong, brittle, very coarse-grained, compact, not 

 durable ; bauds of small summer cells broad, very resinous, conspicuous ; 

 resin passages few, large, prominent ; medullary rays numerous, obscure ; 

 color light brown or red, the thick sap-wood yellow or nearly white; 

 largely used for fuel. 



The large seeds edible. 



367. Pinus Coulteri, D. Don. 



California, — Mcnte Diablo, south through the Coast Ranges to the 

 Cuyamaca Mountains. 



A tree 24 to 46 metres in height, with a trunk 0.00 to 1.80 metres in 

 diameter ; dry ridges and slopes between 3,000 and 6,000 feet elevation ; 

 most common and reaching its greatest development in the San Jacinto 

 Mountains. 



Wood light, soft, not strong, brittle, coarse-grained ; bands of small 

 summer cells broad, very resinous, conspicuous ; resin passages few, large ; 

 medullary rays numerous, prominent ; color light red, the thick sap-wood 

 nearly white. 



368. Pinus insignis, Dougl. 



Monterey Pine. 



California, — Pescadero to Monterey and San Simeon Bay. 

 A tree 24 to 30 metres in height, with a trunk 0.60 to 0.90 metre in di- 

 ameter ; sandy soil, in immediate proximity to the sea-coast ; rare and local. 



