Picea engelmannii

Picea engelmannii, with the common names Engelmann spruce, white spruce, mountain spruce, and silver spruce, is a species of spruce native to western North America. It is mostly a high-elevation mountain tree but also appears in watered canyons. #Gallery Picea engelmannii is a medium-sized to large evergreen tree growing to tall, exceptionally to tall, and with a trunk diameter of up to . The reddish bark is thin and scaly, flaking off in small circular plates across. The crown is narrow conic in young trees, becoming cylindric in older trees. The shoots are buff-brown to orange-brown, usually densely pubescent, and with prominent pulvini. The leaves are needle-like, long, flexible, rhombic in cross-section, glaucous blue-green above with several thin lines of stomata, and blue-white below with two broad bands of stomata. The needles have a pungent odour when crushed. Purple cones of about 1 cm appear in spring, releasing yellow pollen when windy. The cones are pendulous, slender cylindrical, 2.5–8 cm long and 1.5 cm broad when closed, opening to 3 cm broad. They have thin, flexible scales 15–20 mm long, with a wavy margin. They are reddish to dark purple, maturing to light brown 4–7 months after pollination. The seeds are black, 2–3 mm long, with a slender, 5–8 mm long light brown wing. The tree grows in a krummholz form along the fringe of alpine tundras. Engelmann spruce is native to western North America, primarily in the Rocky Mountains and east slopes of the Cascade range from central British Columbia to Southern Oregon in the Cascades and commonly in Montana, Idaho, and Colorado, and more sparsely towards Arizona and New Mexico in the Sky islands; there are also two isolated populations in Northern Mexico. It is mostly a high-elevation mountain tree, in many areas reaching the tree line, but at lower elevations occupies cool watered canyons. It grows from above sea level, rarely lower towards the northwest. It appears in the canyons of the Idaho Panhandle and more limitedly in the northeastern Olympic Mountains; the latter includes exceptionally large specimens, e.

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Tsuga mertensiana, known as mountain hemlock, is a species of hemlock native to the west coast of North America, found between Southcentral Alaska and south-central California. Tsuga mertensiana is a large evergreen conifer growing up to tall, with exceptional specimens as tall as tall. They have a trunk diameter of up to . The bark is about thick and square-cracked or furrowed, and purplish-brown to gray in color. The crown is a neat, slender, conic shape in young trees with a tilted or drooping lead shoot, becoming cylindric in older trees.

Picea glauca, the white spruce, is a species of spruce native to the northern temperate and boreal forests in North America. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, and south to Montana, North Dakota, Minnesota, Wisconsin, Michigan, Upstate New York and Vermont, along with the mountainous and immediate coastal portions of New Hampshire and Maine, where temperatures are just barely cool and moist enough to support it.

Arizona (ˌærᵻˈzoʊnə ; Hoozdo Hahoodzo hoː˥z̥to˩ ha˩hoː˩tso˩; Alĭ ṣonak ˈaɭi̥ ˈʂɔnak) is a state in the Southwestern United States. It is the 6th-largest and the 14th-most-populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Corners region with Utah to the north, Colorado to the northeast, and New Mexico to the east; its other neighboring states are Nevada to the northwest, California to the west and the Mexican states of Sonora and Baja California to the south and southwest.

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