FOREST TREES AND FOREST REGIONS OF THE U. S. 



27 



Name of tree 



Western hemlock (Tsuga 

 heterophylla) . 



Mountain hemlock (Tsuga 



mertensiana) . 

 Douglas fir (Pseudotsuga 



tarifolia) . 



Bigcone spruce (Pseudo- 

 tsuga macrocarpa) . 



Alpine fir (Abies lasio- 

 carpa). 



Corkbark fir (Abies ari- 



zonica). 

 Lowland white fir (Abies 



grandis). 

 White fir (Abies concolor) . 



Silver fir (Abies amabilis) . 



Noble fir (Abies nobilis). 



California red fir (Abies 

 magnifica) . 



Bristlecone fir (Abies 

 venusta). 



Sierra redwood,* or big 

 tree (Sequoia washingto- 

 niana), (S. gigantea)*. 



Coast redwood,* or red- 

 wood (Sequoia sem- 

 pervirens) . 



Incense cedar (Libocedrus 

 decurrens) . 



Western red cedar (Thuja 

 plicata) . 



Monterey cypress (Cu- 

 pressus macrocarpa) . 



Sargent cypress (Cupres- 

 sus sargentii) . 



Gowen cypress (Cupres- 

 sus goveniana) . 



Macnab cypress (Cupres- 

 sus macnabiana) . 



Tecate cypress (Cupressus 

 guadaloupensis) . 



Arizona cypress (Cupres- 

 sus arizonica). 



Smooth cypress (Cupres- 

 sus glabra). 



Alaska cedar (yellow or 

 Sitka cypress) * 

 (Chamaecyparis noot- 

 katensis) . 



Where the tree grows 



Pacific coast and northern Rocky 

 Mountains. 



High altitudes northwestern United 

 States. 



Western United States (except Nev- 

 ada). Largest size and most 



- abundant in coast forests of west- 

 ern Washington and Oregon. 



Mountain slopes of southern Cali- 

 fornia. 



High Rocky Mountains; west into 

 Oregon and Washington. Alaska. 



Highest mountain tops of Arizona 

 and New Mexico. 



Northern Rocky Mountains, coast 

 forest south to California. 



Central and southern Rockies, 

 southwestern Oregon to southern 

 California. Of all firs, it grows in 

 warmest and dryest climate. 



Coast forest of Washington and 

 Oregon, Cascade Mountains. 



Coast mountains, Washington to 

 California; Cascade Mountains of 

 Washington and Oregon. 



Sierra Nevada Mountains of Cali- 

 fornia, Cascade Mountains of 

 southern Oregon. 



Santa Lucia Mountains, Monterey 

 County, Calif. 



Western slopes of Sierra Nevada 

 Mountains in central eastern Cali- 

 fornia. 



Low mountains of Pacific coast, 

 from southern Oregon to Mon- 

 terey County, Calif. 



Oregon (Mount Hood) through the 

 mountains of California. 



Coast of Washington, Oregon, north- 

 ern California; inland to Montana. 

 Alaska. 



Coast of southern California 



Coast region of middle California 



Mendocino and Monterey Counties, 

 Calif. 



Southwestern Oregon and north- 

 western California. 



San Diego County, Calif 



Mountains of southern Arizona and 



New Mexico. 

 Mountains of southern Arizona 



Oregon and Washington 



Descriptive notes 



Leaves flat, blunt, shiny, twisted on 

 branch to form two rows. Cone 1 

 inch long, without stem (fig. 6, H). 

 Important timber tree. 



Leaves rounded or grooved above, 

 curved. Cone with short bracts. 



Leaves straight, flat, rounded near end, 

 soft, flexible, about 1 inch long. 

 Cone 2 to 4 inches long with bracts 

 extended between the scales (fig. 6, 

 F). Up to 380 feet in height. Im- 

 portant timber tree. 



Resembling the above, but cone 4 to 6 

 inches long. 



Leaves flat and grooved above, pale 

 green, 1 inch long. Cone purple. 

 Bark hard. Note that cones on all 

 true firs stand erect on branches. 



Bark soft corky, ashy white. Leaves 

 and cones resembling above. 



Leaves flat, dark green, shiny above. 

 Cone green. Pulpwood tree. 



Same as above, except leaves pale blue- 

 green or whitish, and often 2 to 3 

 inches long. Cone 3 to 4 inches long, 

 purple. Pulpwood tree. 



Leaves flat, dark green, shiny, pointing 

 forward on sterile branches. Cone 

 deep purple, with broad scales. 

 Pulpwood tree. 



Leaves often 4-sided, blue-green, 

 smooth. Cone purple, bracts much 

 longer than cone scales, green. Pulp- 

 wood tree. 



Leaves on sterile branches, 4-sided. 

 Cone purplish brown, slender tips o- 

 bracts same length as scales. Pulpf 

 wood tree. 



Cone bracts many times longer than 

 cone scales. 



Leaves tiny, scalelike. Cone 2 to 3 

 inches long, much larger than those 

 of coast redwood, ripening in 2 years. 

 Bark very thick. Up to 320 feet in 

 height and 35 feet in diameter. Trees 

 mostly protected from cutting. 



Leaves small, Y inch long, thin, flat, 

 spreading in 2 ranks. Cone small, 

 about 1 inch long, ripening in 1 year 

 (fig. 6, G). Up to 364 feet in height 

 and about 25 feet in diameter. Im- 

 portant timber tree. A tree logged 

 in Humboldt County, Calif., scaled 

 361,366 board feet of lumber. 



Resinous, aromatic tree with scaly 

 bark. Leaves variable, up to Y inch 

 long; cone Y inch long, maturing in 

 1 season. Wood used for making 

 pencils. 



Leaves and fruit smaller than those of 

 incense cedar (fig. 6, D). Soft, red, 

 dish-brown wood, used for lumber 

 and shingles. 



Leaves scalelike, dark green, 54 to J^ 

 inch long, dull pointed. 



Leaves scalelike, dark green, glandular- 

 pitted. 



Leaves dark green, sharp pointed. 

 Cones Yi inch diameter; seed dark. 



Cone Y to 1 inch in diameter, often 

 with whitish bloom. 



Leaves pale bluish-green. Bark 

 smooth, shiny. Branchlets bright 

 red. 



Leaves scalelike, pale bluish -green. 

 Bark separating into narrow fibers. 



Differing slightly from the above. 



Bark thin. Branchlets stout. Leaves 

 bluish-green, scalelike. Wood fra- 

 grant. Important timber tree. 



