102 FOREST TREES OP THE PACIFIC SLOPE. 



Washington. — Abundant everywhere, except in Columbia River plains. West of 

 Cascades, generally from sea level to 5,000 feet ; less frequent east of Cascades. Wash- 

 ington National Forest (West) up to 4,000 feet, or occasionally to 6,000 feet : Washing- 

 ten Forest (East) at 1,100 to 6,000 feet. In Cascades, south of this reserve, up to 

 5.400 feet. Mount Rainier National Forest, up to 5,600 feet ; on Mount Rainier and 

 Mount Adams. Olympic Mountains, up to about 3,500 feet ; Blue Mountains, at 2,500 

 to 4,000 feet ; on Kaniiak Butte, head of Grande Coulee River, and in Nisqually River 

 Valley. 



Oregon. — Throughout western part, except in a few arid valleys ; from sea level to 

 6,000 feet. Cascade National Forest (North), sometimes up to 7,200 feet; eastward 

 on Columbia River to Hood River ; east of Mount Hood to within about 6 miles of 

 Wapinitia (west of Deschutes River) ; north side of Mount Hood up to 3,800 feet and 

 to Government Camp on south side. Occurs from Mount Hood to latitude 45°, here 

 disappearing from east side of range. In southern Cascades, on Umpquas, Siskiyous, 

 and west side of Cascades, up to 6,200 feet ; east side of Cascades, at 4,300 to 7,000 

 feet from Klamath Gap northward to Klamath Marsh Terrace ; Mount Mazama at 

 4,500 to over 6,000 feet. On north end of Upper Klamath Lake and lava flows east of 

 this lake, at elevations above 6,000 feet, and southward to Swan Lake Point, reappearing 

 on divide at head of Lost River. Unknown on Klamath-Deschutes Divide and else- 

 where in Klamath Basin. On both slopes of coast ranges, but commoner on western. 



California. — In northern mountains, Sierras, and southward to San Joaquin River ; 

 also in coast ranges to Santa Lucia Mountains. Throughout northwestern California 

 eastward to Mount Sbasta, and westward to the coast ; generally at 2.000 to 6,000 feet. 

 Klamath National Forest, up to 4.000 feet. Eastward in Siskiyou County to east part 

 of Siskiyou Mountains; Klamath River (few miles west of Hornbrook), near Klamath 

 Hot Springs, ridge, east of Sbovel Creek, and eastward to near Picard (west of Klamath 

 Lake), extreme eastern limit; farther south, eastward only to Goosenest Mountain (east 

 of Shasta Valley and north of Mount Shasta), upper McCloud River (south of Mount 

 Shasta) and southeastward to Fall River (Shasta County), where east limits farther 

 south are Mount Lassen, while western limits are Sacramento River Canyon to or below 

 Gregory, McCloud River to its junction with Pitt River, and 3 miles east of Montgomery, 

 at 4,000 to 4,200 feet. Lassen County: Southern part eastward to Susanville. Mount 

 Shasta, bottom slopes, except at north, up to 5,500 feet. In Shasta, Plumas, Lassen 

 Peak, and Diamond Mountain National forests, at 2,000 to 6,000 feet, on west slope of 

 range. Northern Sierras, at 2,400 to 6,000 feet on west slope, or sometimes to 7.000 feet 

 and down to 900 feet, as in Chico quadrangle area (including Butte County) : not in 

 Sierra Valley. Tehama County: East of Sacramento River from point 10 miles east of 

 Paine Creek post-office eastward. Plumas County: Eastward to Grizzly Mountains 

 (west of Sierra Valley). Butte County: Westward to Megalia and to 4 miles north of 

 Bidwell Bar at 1,300 feet. Sierra County: Eastward to mountains west of Sierra Val- 

 ley, thence westward to Yuba Pass (5,800 feet) ; west of Yuba Pass, westward into 

 Yuba County, where west limit is on east foothills of Sacramento Valley at Campton- 

 ville and Oregon Hills, and in Nevada County at Nevada City, Grass Valley, and Colfax 

 on Bear River. Placer County: Westward to junction of Middle and North Forks of 

 American River ; eastward to beyond Blue Canyon and probably also above Emigrant Gap 

 on main Sierra Divide, but not reported on east side of divide between Truckee and Lake 

 Tahoe. Eldorado County: Westward to Placerville, Pleasant Valley, and canyon of 

 North Fork Cosumnes River : eastward to Coloma in canyon of South Fork of American 

 River, and to Echo (Tahoe Road), at 5.500 feet. Stanislaus National Forest, at 2,000 to 

 5,500 feet, and chiefly on and near Mutton Canyon, between Grizzly Flat and Indian 

 Diggins, and on Mill Creek (tributary North Fork Mokelumne River). Amador County: 

 Westward to point :; miles cast of Tine Grove and Sutter Creek Canyon (northeast of 

 Volcano), and eastward to beyond Pioneer. Calaveras County: Only in central western 

 part on branches of Mokelumne River westward nearly to Rich Gold, Esperanza Creek 

 (near Railroad Flat) ; not detected between Murphys and Big Trees nor in Calaveras 

 Big Tree groves, but it occurs on San Antonio Creek about 2 miles below Big Treea 

 Tuolumne County: Canyon of Middle Fork Stanislaus River from junction with Clark 

 Fork at 5.500 feet eastward several miles ; between Big Oak Flat and Crockers, and 

 thence eastward to Aspen Meadows, at 6.200 feet : Hetch Hetchy Valley and Tuolumne 

 1 Big Tree Grove at 5.700 feet. Mariposa County: Westward to near Bull Creek (10 

 miles east of Coulterville and a few miles east of Wassama) ; eastward to Yosemite Valley 

 and Merced River (head of Nevada Fall), at 6,000 feet, Glacier Point at 7,300 feet, and 

 nearly to Chinquapin. Bridal Veil Creek, at 7,100 feet. Southward occurs on head of 

 Stevenson Creek (tributary San Joaquin River) at elevations of 3,000 to 5,500 feet 

 (southern limit in Sierras) at 900 to 5,000 feet, or occasionally to 6,000 feet. In Stony 

 Creek National Forest, at 2,000 to 5,000 feet, but mainly on west side of range. Tehama 

 County: Eastward along Paskenta Road to about 3,300 feet on east side of Coast Range. 



