USDA Forest Service:
1909. Natural size detail photo of mistletoe on lodgepole pine. Wallowa National Forest, Oregon.
USDA Forest Service:
1909. Natural size detail photo of mistletoe on red fir. Oregon.
USDA Forest Service:
1955. Effects of dwarf mistletoe in a heavily infested ponderosa pine stand. This image is a repeat of a photo taken 5 years earlier. Four trees averaging about 12 inches in diameter were killed during this 5 year period. South Rim, Grand Canyon, AZ.
USDA Forest Service:
1956. A single ponderosa pine pole-sized tree heavily infected with dwarf mistletoe. Notice the large brooms in lower half of crown. Deadman Creek, Colville National Forest, Washington.
USDA Forest Service:
1957. Western larch poles heavily broomed from dwarf mistletoe. Big Creek Guard Station, Rexford Ranger District, Kootenai National Forest, Montana.
USDA Forest Service:
1957. A mature lodgepole pine heavily infected with dwarf mistletoe. Other infected trees can be seen in the right background, and dead trees in the left background. South Fork of Big Creek, Kootenai National Forest, Idaho.
USDA Forest Service:
1957. Two large pole-sized western larch with heavy dwarf mistletoe. Notice large swellings on the boles. Gilbert Starks in tree examining the canker. Kootenai River above Libby, Montana.
USDA Forest Service:
1957. Stand of large pole-sized western larch with heavy dwarf mistletoe infection. Notice intensification of upper branches on tree with broken top (right). Kootenai River above Libby, Montana.
USDA Forest Service:
1958. Branch section cut from a Jack pine infected with larch dwarf mistletoe. The tree was planted near the bunkhouse at Priest River Experimental Forest, Idaho.
USDA Forest Service:
1958. A single western larch heavily infected with dwarf mistletoe. The dead trees in the background are Douglas-fir. Along the road between Addy and Gifford, Washington.
USDA Forest Service:
1958. A recently dead Douglas-fir showing dwarf mistletoe broom formation. Note the top was spiked long before the death of the tree. Along the road below Addy, Gifford, Washington.
USDA Forest Service:
1958. A dwarf mistletoe infected stand of young ponderosa pine that has been thinned and pruned under the (Agricultural Conservation Program (ACP). Near Cheney, Washington.
USDA Forest Service:
1958. A single mature ponderosa pine heavily infected with dwarf mistletoe. Note heavy broom and poor condition of the upper crown. Near Spokane, Washington.
USDA Forest Service:
1959. A single ponderosa pine pole-sized tree infected with dwarf mistletoe. Tree is severely broomed in lower half with dying top. Near Spokane, Washington.
USDA Forest Service:
1959. Close-up of dwarf mistletoe plants on main bole of a sapling-size lodgepole pine. Sherman Creek, Colville National Forest, Washington.
USDA Forest Service:
1959. Growden Timber Sale area before cutting. Shows heavily infected western larch overstory and density of established understory. Sherman Creek, Colville National Forest, Washington.
USDA Forest Service:
1959. Morey Vogel and Floyd Cory on plot location during dwarf mistletoe survey of the Growden Sale Area. Sherman Creek, Colville National Forest, Washington.
USDA Forest Service:
1959. A recently dead ponderosa pine killed by dwarf mistletoe. Good illustration of brooming structure. Near Cheney, Washington.
USDA Forest Service:
1959. Larch dwarf mistletoe-infected Scotch pine stand. Stand planted in 1911. North Fork of Chewhelah Creek, Colville National Forest, Washington.
USDA Forest Service:
1959. Cross-section through lodgepole pine dwarf mistletoe branch cankers, showing portions of shoots, basal cups, buds, sinkers, and strands of the dwarf mistletoe plant A. americanum.
USDA Forest Service:
1959. A dead mature Douglas-fir killed by dwarf mistletoe parasitism; broom remnants well-illustrated. East side of Pend Oreille Lake, Idaho.
USDA Forest Service:
1961. Dwarf mistletoe sanitation. Deschutes National Forest, Oregon.
USDA Forest Service:
1961. Dwarf mistletoe sanitation. Deschutes National Forest, Oregon.
USDA Forest Service:
1961. Timekeeper and recorder on mistletoe economics of control study. Dwarf mistletoe sanitation. Deschutes National Forest, Oregon.
USDA Forest Service:
c.1961. Lodgepole pine dwarf mistletoe sanitation logging. Deschutes National Forest, Oregon.
USDA Forest Service:
1964. Marking ponderosa pine infected with dwarf mistletoe (Arceuthobium vaginatum f. cryptopodum) for cutting. Coconino National Forest, Arizona.
USDA Forest Service:
1965. A group of ponderosa pine killed by dwarf mistletoe. South Rim of the Grand Canyon, Arizona.
USDA Forest Service:
1966. A leave strip of mistletoe infected lodgepole pine along this stream threatens the new stand in the clearcut area. (Ecology and Regeneration of Lodgepole Pine.) Sulphur Creek, Townsend Ranger District, Helena National Forest, Montana.
USDA Forest Service:
1968. A mature western larch, heavily broomed by dwarf mistletoe. Near Camp Sherman, Deschutes National Forest, Oregon.
USDA Forest Service:
1968. Severely infected and scattered Douglas-fir overstory trees above thrifty young reproduction. The infected overstory should be removed to insure healthiest possible understory. Santiam Pass, Deschutes National Forest, Oregon.
