26 



MISC. PUBLICATION 217, U. S. DEPT. OF AGRICULTURE 



Name of tree 



Where the tree grows 



Descriptive notes 



Whitebark pine (Pinus 

 albicaulis). 



Mexican white pine (Pi- 

 nus strobiformis) . 



Parry pinon (Pinus parry- 

 ana). 



Mexican pinon (Pinus 

 cembroides) . 



Pinon (nut pine) * (Pinus 

 edulis) . 



Singleleaf pinon (Pinus 

 monophylla). 



Foxtail pine (Pinus bal- 



fouriana) . 

 Bristlecone pine (Pinus 



aristata). 

 Torry pine (Pinus torrey- 



ana). 



Arizona pine (Pinus ari- 

 zonica) . 



Ponderosa pine (western 

 yellow pine)* (Pinus 

 ponderosa. 



Apache pine (Arizona 

 longleaf pine)* (Pinus 

 apacheca) . 



Jeffrey pine (Pinus jeff- 

 reyi) . 



Chihuahua pine (Pinus 



leiophylla). 

 Lodgepole pine (Pinus 



contorta). 



Digger pine (Pinus sabi- 

 niana) . 



Coulter pine (Pinus coul- 

 teri). 



Monterey pine (Pinus 

 radiata). 



Knob-cone pine (Pinus 



attenuata) . 

 Bishop pine (Pinus muri- 



cata). 



Western larch (Larix occi- 

 dentalis) . 



Alpine larch (Larix lyallii) . 



White spruce (Picea 

 glauca). The common 

 western variety is Alber- 

 tiana. 



Engelmann spruce (Picea 

 englemannii) . 



Blue spruce (Picea pun- 

 gens) . 



Sitka spruce (Picea sit- 

 chensis) . 



Weeping spruce (Picea 

 breweriana) . 



Northern Rocky Mountains, east- 

 ern Washington to California. 



Western Texas to southeastern Ari- 

 zona. 



Southern California- 



Central and southern Arizona, 

 western Texas. 



Dry foothills of southern Rocky 

 Mountain region, Utah to Cali- 

 fornia. 



Utah, northern Arizona, central and 

 southern California. 



High mountains of northern and 



central California. 

 High southern Rocky Mountains, 



Utah to southern California. 

 San Diego County and Santa Rosa 



Island , Calif. Range very limited . 



Southern parts of New Mexico and 

 Arizona. 



Mountains of western United 

 States. Often forms extensive 

 pure stands in southern Rockies. 



Central and southwestern New 

 Mexico, southern Arizona. 



Southern Oregon south through 

 California. 



Mountains of Arizona, southwest- 

 ern New Mexico. 



Mountains of western United 

 States; most abundant in north- 

 ern Rockies. 



Foothills of Sierra Nevada Moun- 

 tains in central California. 



Mountains of southern California 

 (scattering) . 



Narrow strip of coast 

 California. 



in central 



Dry mountain slopes, Oregon and 



California. 

 Coast mountains of California 



Mountains of northwestern United 

 States. 



High northern Rocky Mountains.. . 



Northern Rocky Mountain region, 

 including the Black Hills (S. Dak.) 

 and Washington. Alaska. (See 

 also p. 6.) 



Extensive over Rocky Mountain 

 region; Washington and Oregon. 



Central Rocky Mountains. 



Coast region of northern California 

 to Washington. Alaska. 



High mountains near timber line ex- 

 treme northern California and 

 southwestern Oregon. 



Bark usually thin. Leaves 5 in cluster 



1 to 3 inches long, persisting for 5 to 



8 years. Small tree. 

 Leaves 5 in cluster, slender, 4 to 6 



inches long. Cone scales turning 



backward. 

 Leaves usually 4 in cluster. Cone 



small, irregular. Small tree. 

 Leaves 2 or 3 in cluster, 1 to 2 inches 



long. Cone much like above. Small 



tree. 

 Leaves mostly 2 in cluster, 1 to 2 inches 



long. Cone 1 to 2 inches long. Seeds 



large, edible. 

 Leaves occurring singly (occasionally 



2) , 1 to 2 inches long. Cone irregular. 



Seeds edible. Sprawling tree. 

 Leaves in fives, thick, stiff, dark green, 



1 inch long. Cone with thick scales. 

 Leaves in fives, 1 to 2 inches long. 



Cone with long slender prickles. 

 Leaves in fives, clustered at ends of 



branches, 9 to 12 inches long. Cone 



with thick scales. 

 Leaves in threes to fives, stout, 5 to 7 



inches long. Cone about 2 inches 



long. 

 Leaves in clusters of 3, tufted, 5 to 10 



inches long. Cone on short stem 



(if any), 3 to 6 'nches long, with 



prickles (fig. 6, A). Important tim- 

 ber tree. 

 Leaves very long (8 to 15 inches), 



dark green, stout. Cone one-sided. 



Leaves 5 to 9 inches long, in threes, 

 stiff. Cone 6 to 15 inches long, with 

 large seeds. 



Leaves in threes, slender, gray-green. 

 Cone small, ripening in 3 years. 



Leaves in twos, 1 to 3 inches long. 

 Cone remaining closed for several 

 years. Tree used for crossties and 

 poles. 



Leaves in threes, blue-green, drooping, 

 8 to 12 inches long. Cone large, 

 sharp, spiny, with edible seeds or 

 nuts. 



Leaves in threes, thick, dark blue- 

 green, 7 to 10 inches long. Cone is 

 largest of all native pines, 10 to 14 

 inches long, with strong curved 

 spines. 



Leaves mostly in threes. Cone often 

 remaining closed on trees for many 

 years. 



Leaves pale green, 3 in bundle. Cone 

 1-sided at the base. 



Leaves in twos, 3 to 5 inches long. 

 Cone spiny, often staying closed for 

 years. 



Leaves 1 inch long, closely crowded, 

 falling in winter. Cone with bracts 

 extending beyond scales. Important 

 for timber and crossties. 



Resembling above except leaves 4- 

 angled. 



Leaves 4-sided, pale blue-green, sharp. 

 Cone scale rounded. 



Leaves 4-sided, 1 inch long. Cone 

 brown, shiny, with thin notched 

 scales (fig. 6, B). Pulpwood and 

 timber tree. 



Leaves stiff, sharp-pointed, curved, 

 blue-green. 



Leaves flattened, sharp. Cone with 

 scales notched toward ends. Impor- 

 tant timber tree. 



Leaves flattened, blunt. Branchlets 

 hairy, light brown. 



