Vine maple (Acer circinatum), Lookout Creek Old-growth trail, H.J. Andrews Experimental Forest, Oregon, USA
Vine maple (Acer circinatum), Lookout Creek Old-growth trail, H.J. Andrews Experimental Forest, Oregon, USA
Mountain hemlock (Tsuga mertensiana) needles, Castle Crest WIldflower Garden, Crater Lake National Park, Oregon, USA
Trail through redwoods, Trillium Falls trail, Redwood National Park, California, USA
Trail through redwoods, Trillium Falls trail, Redwood National Park, California, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Quaking aspen (Populus tremuloides), Great Basin National Park, Nevada, USA
Quaking aspen (Populus tremuloides), Great Basin National Park, Nevada, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Narrowleaf cottonwood (Populus angustifolia) gallery forest along Snake River, Grand Teton National Park, Wyoming, USA
Narrowleaf cottonwood (Populus angustifolia) gallery forest along Snake River, Grand Teton National Park, Wyoming, USA
Box elder (Acer negundo), American Prairie Reserve, Eastern Montana, USA
Box elder (Acer negundo), American Prairie Reserve, Eastern Montana, USA
Shasta red fir (Abies magnifica), Crater Lake National Park, Oregon, USA
Shasta red fir (Abies magnifica), Crater Lake National Park, Oregon, USA
Douglas-fir (Pseudotsuga menziesii) and Vine maples, Spencer Butte Park, Eugene, Oregon, USA
Douglas-fir (Pseudotsuga menziesii) and Vine maples, Spencer Butte Park, Eugene, Oregon, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Ponderosa pine (Pinus ponderosa) tree closeup, LaPine State Park, Oregon, USA
Ponderosa pine (Pinus ponderosa) tree closeup, LaPine State Park, Oregon, USA
Western juniper (Juniperus occidentalis) forest, Steens Mountain Wilderness, BLM, Oregon, USA
Western juniper (Juniperus occidentalis) forest, Steens Mountain Wilderness, BLM, Oregon, USA
Quaking aspen (Populus tremuloides), Wood River Valley, Fort Klamath, Oregon, USA
Quaking aspen (Populus tremuloides), Wood River Valley, Fort Klamath, Oregon, USA
Quaking aspen (Populus tremuloides), Wood River Valley, Fort Klamath, Oregon, USA
Quaking aspen (Populus tremuloides), Wood River Valley, Fort Klamath, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Forest and Mist, Diamond Peak Wilderness, Oregon Route 58 turnout, Oregon, USA
Forest and Mist, Diamond Peak Wilderness, Oregon Route 58 turnout, Oregon, USA
Discovery Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Discovery Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Old-growth Douglas-fir (Pseudotsuga menziesii), James Irvine Trail, Prairie Creek Redwoods State Park, California, USA
Old-growth Douglas-fir (Pseudotsuga menziesii), James Irvine Trail, Prairie Creek Redwoods State Park, California, USA
Humboldt Redwoods State Park, California, USA
Humboldt Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Quaking aspen (Populus tremuloides), Great Basin National Park, Nevada, USA
Quaking aspen (Populus tremuloides), Great Basin National Park, Nevada, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Pacific dogwood (Cornus nuttallii), H.J. Andrews Forest, Oregon, USA
Pacific dogwood (Cornus nuttallii), H.J. Andrews Forest, Oregon, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Redwood Creek Coastal redwood forest and Oregon white oak woodland prarie grassland, Dolason prairie, Bald Hills Road, Redwood National Park, California, USA
Redwood Creek Coastal redwood forest and Oregon white oak woodland prarie grassland, Dolason prairie, Bald Hills Road, Redwood National Park, California, USA
Baker cypress (Cupressus bakeri), Neville-nye Memorial Grove,Flounce Rock, BLM, Oregon, USA
Baker cypress (Cupressus bakeri), Neville-nye Memorial Grove,Flounce Rock, BLM, Oregon, USA
Alaska yellow cedar (Cupressus nootkatensis) needle and branch closeup, Bureau of Land Management, Oregon, USA
Alaska yellow cedar (Cupressus nootkatensis) needle and branch closeup, Bureau of Land Management, Oregon, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Quaking aspen (Populus tremuloides), Turnbull National Wildlife Refuge, Washington, USA
Quaking aspen (Populus tremuloides), Turnbull National Wildlife Refuge, Washington, USA
Pacific silver fir (Abies amabilis) with cones, from Carpenter Mountain fire lookout, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Pacific silver fir (Abies amabilis) with cones, from Carpenter Mountain fire lookout, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Oregon Redwoods Trail, Rogue River-Siskiyou National Forest, Oregon, USA
Oregon Redwoods Trail, Rogue River-Siskiyou National Forest, Oregon, USA
South Fork Trail, Prairie Creek Redwoods State Park, California, USA
South Fork Trail, Prairie Creek Redwoods State Park, California, USA
Dorris Ranch Living History Filbert Farm, Springfield, Oregon, USA
Dorris Ranch Living History Filbert Farm, Springfield, Oregon, USA
Whitebark pine (Pinus albicaulis), Crater Lake National Park, Oregon, USA
Whitebark pine (Pinus albicaulis), Crater Lake National Park, Oregon, USA
Coastal redwood (Sequoia sempervirens), Redwood National Park, California, USA
Coastal redwood (Sequoia sempervirens), Redwood National Park, California, USA
Coastal redwood (Sequoia sempervirens) forest, Muir Woods National Monument, California, USA
Coastal redwood (Sequoia sempervirens) forest, Muir Woods National Monument, California, USA
Coastal redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Coastal redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Mixed subalpine forest trees at the rim of Crater Lake, Crater Lake National Park, Oregon, USA
Mixed subalpine forest trees at the rim of Crater Lake, Crater Lake National Park, Oregon, USA
Oregon white oaks (Quercus garryana), Dolason prairie grassland, Bald Hills Road, Redwood National Park, California, USA
Oregon white oaks (Quercus garryana), Dolason prairie grassland, Bald Hills Road, Redwood National Park, California, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Ponderosa pines (Pinus ponderosa) in winter snow, Crater Lake National Park, Oregon, USA
Ponderosa pines (Pinus ponderosa) in winter snow, Crater Lake National Park, Oregon, USA
Mixed Montane conifer forest of trees, from Carpenter Mountain fire lookout, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Mixed Montane conifer forest of trees, from Carpenter Mountain fire lookout, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Joshua tree (Yucca brevifolia), Joshua Tree National Park, California, USA
Joshua tree (Yucca brevifolia), Joshua Tree National Park, California, USA
Western Red Cedar (Thuja plicata), Ross Creek Cedars, Kootenai National Forest, Montana, USA
Western Red Cedar (Thuja plicata), Ross Creek Cedars, Kootenai National Forest, Montana, USA
Forest and Mist, Diamond Peak Wilderness, Oregon Route 58 turnout, Oregon, USA
Forest and Mist, Diamond Peak Wilderness, Oregon Route 58 turnout, Oregon, USA
Coastal redwood (Sequoia sempervirens), Redwood National Park, California, USA
Coastal redwood (Sequoia sempervirens), Redwood National Park, California, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Lookout Creek Old-growth trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Curl-leaf mountain mahogany (Cercocarpus ledifolius), Great Basin National Park, Nevada, USA
Curl-leaf mountain mahogany (Cercocarpus ledifolius), Great Basin National Park, Nevada, USA
Vine maple (Acer circinatum), Fall Creek road, Willamette National Forest, Oregon, USA
Vine maple (Acer circinatum), Fall Creek road, Willamette National Forest, Oregon, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Bigleaf maples (Acer macrophyllum), Prairie Creek Trail, Prairie Creek Redwoods State Park, California, USA
Bigleaf maples (Acer macrophyllum), Prairie Creek Trail, Prairie Creek Redwoods State Park, California, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Limber pine (Pinus flexilis), Great Basin National Park, Nevada, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Plains Cottonwood (Populus deltoides) tree in fall color, yellow, and Devil’s Tower, Devil’s Tower National Monument, Wyoming, USA
Plains Cottonwood (Populus deltoides) tree in fall color, yellow, and Devil’s Tower, Devil’s Tower National Monument, Wyoming, USA
Coastal redwood (Sequoia sempervirens), Prairie Creek Redwoods State Park, California, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Mountain hemlock (Tsuga mertensiana), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Old-growth Douglas fir (Pseudotsuga menziesii), Lookout Creek Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Old-growth Douglas fir (Pseudotsuga menziesii), Lookout Creek Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Bigleaf maple in redwood forest, (Acer macrophyllum), Humboldt Redwoods State Park, California, USA
Bigleaf maple in redwood forest, (Acer macrophyllum), Humboldt Redwoods State Park, California, USA
Burnt and blackened Ponderosa pines (Pinus ponderosa) in winter snow, Crater Lake National Park, Oregon, USA
Burnt and blackened Ponderosa pines (Pinus ponderosa) in winter snow, Crater Lake National Park, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Coastal redwood (Sequoia sempervirens), Oregon Redwoods Trail, Rogue River-Siskiyou National Forest, Oregon, USA
Coastal redwood (Sequoia sempervirens), Oregon Redwoods Trail, Rogue River-Siskiyou National Forest, Oregon, USA
Old-growth Douglas fir forest, Fall Creek drainage, Willamette National Forest, Oregon, USA
Old-growth Douglas fir forest, Fall Creek drainage, Willamette National Forest, Oregon, USA
Western juniper (Juniperus occidentalis) forest, Steens Mountain Wilderness, BLM, Oregon, USA
Western juniper (Juniperus occidentalis) forest, Steens Mountain Wilderness, BLM, Oregon, USA
Red alder (Alnus rubra), Humboldt Lagoons State Park, California, USA
Red alder (Alnus rubra), Humboldt Lagoons State Park, California, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Mountain hemlocks (Tsuga mertensiana) in winter, Crater Lake National Park, Oregon, USA
Mountain hemlocks (Tsuga mertensiana) in winter, Crater Lake National Park, Oregon, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Great basin bristlecone pine (Pinus longaeva), Great Basin National Park, Nevada, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Coastal fog and Redwood forest, Elk Meadow Day Use Area, Redwood National Park, California, USA
Coastal fog and Redwood forest, Elk Meadow Day Use Area, Redwood National Park, California, USA
Red and grey trees killed by bark beetles, Crater Lake National Park, Oregon, USA
Red and grey trees killed by bark beetles, Crater Lake National Park, Oregon, USA
Old-growth Douglas fir forest, Fall Creek drainage, Willamette National Forest, Oregon, USA
Old-growth Douglas fir forest, Fall Creek drainage, Willamette National Forest, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Oregon white oak (Quercus garryana), William L. Finley National Wildlife Refuge, Oregon, USA
Sitka spruce (Picea sitchensis) tree, Patrick’s Point State Park, California, USA
Sitka spruce (Picea sitchensis) tree, Patrick’s Point State Park, California, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Lodgepole pines (Pinus contorta), Crater Lake National Park, Oregon, USA
Redwood Creek Overlook, Redwood National Park, California, USA
Redwood Creek Overlook, Redwood National Park, California, USA
Moorman Pond Trail, Prairie Creek Redwoods State Park, California, USA
Moorman Pond Trail, Prairie Creek Redwoods State Park, California, USA
Noble fir (Abies procera), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Noble fir (Abies procera), Carpenter Mountain, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Fir-Aspen tree forest belt, Great Basin National Park, Nevada, USA
Ghost/Albino Coast Redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Ghost/Albino Coast Redwood (Sequoia sempervirens), Humboldt Redwoods State Park, California, USA
Pacific yew (Taxus brevifolia), Lookout Creek Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA
Pacific yew (Taxus brevifolia), Lookout Creek Trail, H.J. Andrews Forest, Willamette National Forest, Oregon, USA