De I. VNER VEW D Forest Trees of the Pacific Slope

48 FOREST TREES OF THE PACIFIC SLOPE.
9,500 feet, and southward to head of Cottonwood Creek; also throughout western slopes,
forming a similar belt, above and with Pinus ponderosa (usually at and near its upper
limits) and extending southward through Tehachapi Mountains to southern cross ranges.
On west slopes of Sierras (Stanislaus National Forest), found about Strawberry and Bear
Meadow. North slope of Lassen P'eak (Shasta County), eastward to 5 miles west of
Quincy and Beckwith, Sierra Valley westward to Bucks Valley (5,200 feet), and 30
miles down Feather River Valley. Lassen County: Northwest corner between Fall River
and Big Valley eastward to 6 miles west of Bieber. Sierra County: Eastward to ridge
west of Sierra Valley (at levels between 5,700 and over 6,000 feet) to Slerraville and
Truckee; westward to Bassett Road House (west of Yuba Pass) at 5,200 feet. Nevada
County: Eastward on east slope of Sierras and into Nevada to hills west of Steamboat
Valley; westward to Bowman Lake (between Middle and South forks Yuba River), and
to Cisco. Placer County: Eastward to Lake Tahoe and into Nevada; westward to Sugar
Pine sawmill (4,000 feet). Eldorado County: East side of Sierras; west side, westward
to Echo (5,500 feet). Alpine County: East side Sierras from Woodfords and Markleeville
to east part Mokelumne Pass; west side, from 8,400 feet westward to about 6,500 feet
(Calaveras County). Tuolumne County: Westward to between Cold Spring and Eureka
Valley (5,900 feet) and Aspen Meadows (6,300 feet) ; eastward on west slope of Sierras
to Sonora Pass and to over 8,000 feet, and 2 miles west of White Wolf (Middle Fork
Tuolumne) at 7,500 feet. Mono County: East side of Sonora Pass on mountains about
West Walker Creek and in pass to about 8,300 feet; from little southeast of Junction
House nearly to Bridgeport Valley ; between latter and Antelope Valley in West Walker
Canyon, disappearing several miles south of Antelope Valley; west of Mono Lake on east
slopes of Sierras and on Leevining Creek nearly to lake; Walker Lake at lower end of
Bloody Canyon, and sparingly to about 9,300 feet; south of Mono Lake (east side Mono
Craters) on east base of Sierras to tilnt beyond Mammoth; in valley west side of Mono
Craters to a point 7,300 feet about 7 miles south of Farrington's. In belt about 15
miles wide between Mono Desert and Casa Diablo (at 7,000 to 8,000 feet) eastward from
Sierras to south end of Mono Craters; south of Mammoth, on both sides of head of
Long Valley, and between Long and Round valleys. Inyo County: Divide north of
Round Valley and westward to foot of Sierras; west of Owens Lake, on east slope of
Sierra between 9,000 and 9,500 feet. Mariposa County: Eastward to Sunset Ridge (east
of Little Yosemite) at 9,000 feet, Mount Hoffman, headwaters of Snow Creek, at 8,500
feet, on Yosemite Creek (north of Yosemite Valley) to 8,500 feet, and westward to point
(5,500 feet) 8 miles north of Wawona. Middle Fork of Kings River, at 9,500 feet; South
Fork Kings to Bubbs Creek and Horse Corral Meadows, Cliff Creek to beer Creek (Middle
Fork Kawash River), Farewell Gap, and Kern River canyons to 9,000 feet; junction
of Kern and Little Kern rivers, at 6,000 feet; Dry Creek meadow (near Kern River), at
4,800 feet. Mount Breckenridge, at 5,000 to 7,000 feet, Tehachapi Peak (Tehachapi
Mountains), and Bear Mountain (west of Tehachapi Pass). Southern cross ranges
(Santa Barbara National Forest), at elevation of from 4,500 to 8,800 feet, as follows:
Big Pine Mountain, at 7,000 feet; Seymour Creek, at 6,700 to 7,000 feet; South Fork of
Piru River, at .5,000 feet ; near junction of Alamo River, at 4,500 feet; near Mount Pinos,
at 5,750 to 8,800 feet. San Gabriel National Forest, on Mount Wilson and Pine Flats
(Frazier Mountain). San Bernardino Mountains, at altitudes from 5,000 to 6,700 feet
in Bear and Little Bear Valleys, in vicinity of Crafts Peak, and on other north slopes;
also on San Jacinto Mountains; San Jacinto Peak, at 5,200 to 9,300 feet; noted in east
end Round Valley, Tahquitz, Onstatt, Strawberry, and Thomas valleys: throughout Cuyamaca
Mountains, being reported in Pine Valley, at 3,600 feet.
LOWERn CALIFORNIA.-Mount San Pedro Martir, at 6,000 to 10,000 feet.
OCCURRENCE.
Commonly between the upper altitudes of western yellow pine and of white fir, with
no sharp line of separation between its range and the ranges of these trees; usually overlapping
the upper range of yellow pine and sometimes exceeding that of white fir. Best
commercial growth between 5,000 and 6,500 feet elevation. Soil requirements moderate,
but for best growth demands well-drained, loose, coarse, sandy or gravelly soil with
abundant moisture. Occurs extensively, however, though in poor form or much stunted,
on poor, shallow soils and in crevices of bare rock. Appears to require more soil moisture
than whire fir and sugar, yellow, and Coulter pines.
Occasionally in pure stands, and often predominating in mixture. Pure forests occur
at lower altitudes where soil and moisture conditions are the best, as in bottoms and
along streams, or at higher elevations, soil on rocky summits, where more exacting trees
are excluded for want of sufficient moisture. At north, associates with western yellow