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

FOREST TREES OF THE PACIFIC SLOPE.
sea slopes; Salmon River, inland 45 miles from head of Dean Inlet, at 2,400 feet, and
also on east slope of Coast Range in lower Iltasyouco Valley (tributary Salmon River);
on Homathco River inland 63 miles to 2,720 feet elevation ; lower Fraser River Valley
inland to Uztlihoos River (branch Anderson River), 6 miles east of Boston Bar; also on
Coquihalla River at point south of summit between this stream and Coldwater River;
farther south, sparingly on Skaist River (east branch of Skagit), and on the Similkameen
at point about 13 miles below Vermilion Forks. Valleys of Gold Range westward
to within 8 miles of head of Okanogan Lake, northeastern part of Shuswap Lake, down
north branch of Thompson River Valley to point about 20 miles below Clearwater River;
northward to Quesnelle River, Fort George (on upper Fraser), and to headwaters of
Parsnip River. Not in Columbia-Kootenai Valley, but in valleys of Selkirk Mountains
and on west slopes of Rockies; eastern limit, Kicking Horse Lake, at 6,000 feet.
WASH1oNGTON.-Throughout western part from sea level to about 4,000 feet In Olympic
coast ranges, and west slope of Cascades; and more rarely, on east slope Cascades and
northern ranges eastward to Idaho at elevations from about 1,500 to 4,500 feet. Abundant
on Pacific coast and on east coast of Puget Sound, but rare in valley south of
Sound, and on west coast of Puget Sound, except at northeastern corner of Olympic
Peninsula. Washington National Forest, on west slope of Cascades sea level to 4,500
feet; east slope, at 1,000 to 4,700 feet, and only on Stehekin River, Bridge and Early
Winter creeks, Twisp, Methow, Entiat, Wenache, and Yakima rivers. Locally noted as follows:
Mountain View (Whatcom County) one-eighth mile from Puget Sound; Orient, at
1,188 feet (Sauk River) ; Skagit Pass, Big Lake (Skagit County) ; Cascade Creek at point
11 miles above Mount Marble; North Fork of Skagit River; Stilaguamish River, below
Silverton; South Fork, below Robe; Monte Cristo, at 2,763 feet; Buck Creek, near
Mineral Park; Eagle Gorge (King County) ; vicinity of Seattle; about Lake Chelan and
Stehekin (head of Lake Chelan), at 1,108 feet; Peshastin, at 1,045 feet; Wenache River.
Mount Rainier National Forest, up to 5,100 feet; on east side of range, only on two small
head streams of Natches River, and on one of Klickitat River. Locally noted at Orting
in Nisqually Valley, on Mount Adams, and in Falcon Valley (south of Mount Adams);
Port Ludlow, at 1,800 feet; Soleduc River above Wineton, at 900 feet ; Hot Springs.
Both sides of Coast Range, but more abundant on west side. Locally noted in Queniult
Indian Reservation, at Olympia, Black Walnut, and Elma (Chehalis County), Dryad
(Lewis County). Mountains of eastern Washington southward to Kamiak Butte (9
miles north of Pullman). Locally noted in Washington addition to Priest River National
Forest; Pierre division of Colville National Forest; about Colville (Stevens
County), at 1,917 feet. Not in Blue Mountains.
ORECON.-Both sides of Coast Range, but mainly on west side of Cascades; not in
Willamette River Valley. Coast Range, sea level to 3,500 feet, and southward into
California. West side of Cascades at 1,600 to 5,000 feet, southward to head of North
Fork of Umpqua River; and Crater Lake; east side, only on east and south slopes of
Mount Hood and for a few miles south to latitude 45'. Locally noted on north side of
Mount Hood from bridge across Hood River (1,700 feet) to Columbia River, and on
south and southwest sides from Camas Prairie and Government camp west to Salmon
post-office ; Portland; Astoria; on North Fork of Middle Fork of Willamette River ; Crater
Lake to summit of rim, at 7,500 feet.
CALIFORNIA.-Sea side of coast ranges southward to Mendocino County; inland through
fog belt, on south slopes of Siskiyous to northwest corner of Klamath National Forest;
on Klamath River for 20 miles, and on Eel River to Dyerville. Locally noted on outer
peninsula at Humboldt Bay; lower Mad River 17 miles north of Eureka; south of Ferndale
on road te Bear Valley (Humboldt County), Crescent City.
The detailed range of western red cedar in Idaho and Montana will be described
in a later bulletin.
OCCURRENCE.
157
Confined to region of abundant precipitation and humidity, chiefly to wet or constantly
moist situations. Occasionally on moderately dry slopes and warm exposures, where,
however, it is stunted. On moist flats, benches, gentle slopes, river bottoms, in and about
swamps and wet, springy places, and in cool, moist gulches and ravines. Abundant
moisture more important than quantity or quality of soil, which, however, are important
for best growth. Of gigantic size on deep, rich, moist bottoms in vicinity of the coast,
particularly in Washington, on Vancouver Island, and in British Columbia, while at high
elevations it is shrubby.
Not in pure stands over extensive areas; usually in mixture and dominant or subordinate.
Small pure patches and groups, too dense for intolerant rivals, are characteristic.
Generally with redwood, Sitka spruce, western hemlock, Douglas fir, lowland fir,
western white pine, western larch, lodgepole pine, Engelmann spruce, yew, vine and
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