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General:
Rocky Mountain Juniper (Juniperus
scopulorum)
is a coniferous (cone-bearing) tree with tiny, scale-like leaves. The
cones are round berries about 1/4-inch in diameter. This species is
most easily recognized by the tiny cones and the flat, drooping nature
of the branches (more like a cedar than other local junipers).
In southern Nevada, Rocky Mountain Juniper is uncommon
in the Spring, Sheep, and Virgin mountains in the Transition (Yellow
Pine Forests) and Canadian (Pine-Fir Forest)
life zones. |
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Family:
Cypress (Cupressaceae).
Other Names:
Plant Form:
Upright shrub to short tree.
Height:
To 20 (40) ft tall.
Trunk:
To 1.5 ft diameter. |
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Bark:
Fresh bark is reddish brown; aging to gray, shreddy, and fibrous.
Branches:
Branchlets somewhat flattened (similar to cedar); drooping towards the
end of the branch.
Needles:
Gray-green, scale-like, about 1/8 in long. Young twigs on immature
trees have needle-like leaves. Leaves smooth on margin.
Cones:
Small; blue covered in grayish waxy coating. |
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Seeds:
2 seeds, 6-9 mm diameter.
Habitat:
Higher elevation mountain slopes and ridges.
Elevation:
About 7,000 to 9,000 feet around Las Vegas; down to sea level in the
north.
Distribution:
Eastern Nevada to New Mexico, north to the Canadian border.
Comments:
Rocky
Mountain Juniper occur in the Spring, Sheep, and Virgin Mountains, but
they are generally uncommon around Las Vegas. This species is most
easily seen along the entrance road to Hilltop Campground (off Deer
Creek Road between Kyle and Lee canyons). |

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Rocky Mountain Juniper (above red
line) and
Utah Juniper (below red line). Red arrows mark juniper cones (small in
Rocky Mountain Juniper and large in Utah Juniper). Blue arrow marks red
bark on young stem of Rocky Mountain Juniper.
Rocky Mountain Juniper appears more lacy, drooping, and flat, while
Utah Juniper appears more coarse, upright, and angular.
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