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Picea pungens (Colorado Blue Spruce or Blue Spruce) is a species of spruce
Spruce

A spruce is a tree of the genus Picea, a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth....
 native to western North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
, from southeast Idaho
Idaho

The State of Idaho is a U.S. state in the Pacific Northwest region of the United States of America. The state's largest city and Capital is Boise, Idaho....
 and southwest Wyoming
Wyoming

The State of Wyoming is a sparsely populated U.S. state in the Northwestern United States of the United States. The majority of the state is dominated by the mountain ranges and rangelands of the Rocky Mountains, while the easternmost section of the state is a high altitude prairie region known as the High Plains ....
, south through Utah
Utah

The State of Utah is a western United States U.S. state of the United States. It was the List of U.S. states by date of statehood admitted to the United States on January 4, 1896....
 and Colorado
Colorado

The State of Colorado is a U.S. state located in the Mountain States of the United States of America. Colorado may also be considered to be a part of the Western United States and Southwestern United States regions of the United States....
 to Arizona
Arizona

The State of Arizona is a U.S. state located in the Southwestern United States of the United States. The capital and largest city is Phoenix, Arizona....
 and New Mexico
New Mexico

New Mexico is a U. S. State located in the Southwestern United States of the United States. Inhabited by Native Americans in the United States populations for many centuries, it has also has been part of the Spanish Empire viceroyalty of New Spain, part of Mexico, and a U.S....
. It grows at high altitudes from 1,750-3,000 m altitude, though unlike Engelmann Spruce
Engelmann Spruce

Picea engelmannii is a species of spruce native to western North America, from central British Columbia and southwest Alberta, southwest to northern California and southeast to Arizona and New Mexico; there are also two isolated populations in northern Mexico....
 in the same area, it does not reach the alpine tree-line
Tree-line

The tree line or timberline is the edge of the habitat at which trees are capable of growing. Beyond the tree line, they are unable to grow because of inappropriate environmental conditions ....
. It is most commonly found growing along streamsides in mountain valleys, where moisture levels in the soil are greater than the often low rainfall in the area would suggest.






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Encyclopedia


Picea pungens (Colorado Blue Spruce or Blue Spruce) is a species of spruce
Spruce

A spruce is a tree of the genus Picea, a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth....
 native to western North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
, from southeast Idaho
Idaho

The State of Idaho is a U.S. state in the Pacific Northwest region of the United States of America. The state's largest city and Capital is Boise, Idaho....
 and southwest Wyoming
Wyoming

The State of Wyoming is a sparsely populated U.S. state in the Northwestern United States of the United States. The majority of the state is dominated by the mountain ranges and rangelands of the Rocky Mountains, while the easternmost section of the state is a high altitude prairie region known as the High Plains ....
, south through Utah
Utah

The State of Utah is a western United States U.S. state of the United States. It was the List of U.S. states by date of statehood admitted to the United States on January 4, 1896....
 and Colorado
Colorado

The State of Colorado is a U.S. state located in the Mountain States of the United States of America. Colorado may also be considered to be a part of the Western United States and Southwestern United States regions of the United States....
 to Arizona
Arizona

The State of Arizona is a U.S. state located in the Southwestern United States of the United States. The capital and largest city is Phoenix, Arizona....
 and New Mexico
New Mexico

New Mexico is a U. S. State located in the Southwestern United States of the United States. Inhabited by Native Americans in the United States populations for many centuries, it has also has been part of the Spanish Empire viceroyalty of New Spain, part of Mexico, and a U.S....
. It grows at high altitudes from 1,750-3,000 m altitude, though unlike Engelmann Spruce
Engelmann Spruce

Picea engelmannii is a species of spruce native to western North America, from central British Columbia and southwest Alberta, southwest to northern California and southeast to Arizona and New Mexico; there are also two isolated populations in northern Mexico....
 in the same area, it does not reach the alpine tree-line
Tree-line

The tree line or timberline is the edge of the habitat at which trees are capable of growing. Beyond the tree line, they are unable to grow because of inappropriate environmental conditions ....
. It is most commonly found growing along streamsides in mountain valleys, where moisture levels in the soil are greater than the often low rainfall in the area would suggest.

Picea Pungens2
It is a medium-sized evergreen
Evergreen

In botany, an evergreen plant is a plant having leaf all year round. This contrasts with deciduous plants, which completely lose their foliage for part of the year....
 tree
TREE

TREE was a Boston hardcore punk band formed in the summer of 1990. They were active in the Boston music scene until disbanding in 2002....
 growing to 25-30 m tall, exceptionally to 46 m tall, and with a trunk diameter of up to 1.5 m. The bark
BARK

BARK was an early Electromechanics. BARK was built using standard phone relays, implementing a 32-bit binary machine and could perform addition in 150 ms and multiplication in 250 ms....
 is thin and scaly, flaking off in small circular plates 5-10 cm across. The crown is conic in young trees, becoming cylindric in older trees. The shoots are stout, orange-brown, usually glabrous, and with prominent pulvini. The leaves
Leaf

In botany, a leaf is an above-ground plant Organ specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues....
 are needle-like, 15-30 mm long, stout, rhombic in cross-section, dull gray-green to bright glaucous blue (very variable from tree to tree in wild populations), with several lines of stomata; the tip is viciously sharp.

The cones
Conifer cone

A cone is an organ on plants in the division Pinophyta that contains the plant sexuality structures. The familiar woody cone is the female cone, which produces seeds....
 are pendulous, slender cylindrical, 6-11 cm long and 2 cm broad when closed, opening to 4 cm broad. They have thin, flexible scales 20-24 mm long, with a wavy margin. They are reddish to violet, maturing pale brown 5-7 months after pollination. The seed
Seed

A seed is a small Plant embryogenesis plant enclosed in a covering called the seed coat, usually with some Food storage. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant....
s are black, 3-4 mm long, with a slender, 10-13 mm long pale brown wing.

Blue Spruce does not normally hybridize with other spruces, though hybrids with Engelmann Spruce have been found very rarely.

The Blue Spruce is the State Tree of Utah
Utah

The State of Utah is a western United States U.S. state of the United States. It was the List of U.S. states by date of statehood admitted to the United States on January 4, 1896....
.

The tree in the center of the The Ellipse in Washington DC is a Colorado Blue Spruce.