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"Galleries of the spruce-destroying beetle beneath the bark of a spruce tree." —Davison, 1906

Spruce Beetle

"Galleries of the spruce-destroying beetle beneath the bark of a spruce tree." —Davison, 1906

Also known as Pseudotsuga macrocarpa. A conifer native to southern California.

Pine Cone of Bigcone Douglas Fir

Also known as Pseudotsuga macrocarpa. A conifer native to southern California.

Also known as Picea mariana. A species of spruce native to North America.

Black Spruce Pine Cone

Also known as Picea mariana. A species of spruce native to North America.

Also known as Picea breweriana. A species of spruce tree native to western North America.

Brewer Spruce Pine Cone

Also known as Picea breweriana. A species of spruce tree native to western North America.

Pictured are conifer forms: pine and spruces.

Conifer Tree

Pictured are conifer forms: pine and spruces.

Also known as Pseudotsuga menziesii. An evergreen conifer species found in western North America.

Pine Cone of Douglas Spruce

Also known as Pseudotsuga menziesii. An evergreen conifer species found in western North America.

Also known as Picea engelmannii. A species of spruce tree native to western North America.

Engelmann Spruce Pine Cone

Also known as Picea engelmannii. A species of spruce tree native to western North America.

Also known as the spotted or spruce grouse, the Canada grouse is found in the northerly latitudes of the North American contitent.

Canada Grouse

Also known as the spotted or spruce grouse, the Canada grouse is found in the northerly latitudes of…

Illustrated is a group of surviving hemlock spruces.

Hemlock Spruce

Illustrated is a group of surviving hemlock spruces.

The common names of picea excelsa are burgundy pitch tree and Norway spruce fir. Pictured is a fruiting branch and scale with seeds in position, and the seed of the burgundy pitch tree.

Picea Excelsa

The common names of picea excelsa are burgundy pitch tree and Norway spruce fir. Pictured is a fruiting…

The pine cone of a Picea parryana pine tree.

Picea Parryana Pine Cone

The pine cone of a Picea parryana pine tree.

Picea smithiana is a spruce fir. The tree grows between eighty and one hundred twenty feet tall.

Picea Smithiana

Picea smithiana is a spruce fir. The tree grows between eighty and one hundred twenty feet tall.

This illustration shows some common examples of Pinales: 5, Thuja or arbor vitae. 6, Strobilus, of Chamaecyparis or southern white cedar. 7, strobilus of Juniperus or red cedar with fleshy scales fused into a berry-like fruit. 8, branch of Taxus or yew. The seeds are produced singly in the axils of leaves on short lateral branches and nearly enveloped by a thick fleshy cup that becomes bright red. 9. Picea or spruce.

Pinales

This illustration shows some common examples of Pinales: 5, Thuja or arbor vitae. 6, Strobilus, of Chamaecyparis…

Also known as Picea rubens. Native to North America.

Red Spruce Pine Cone

Also known as Picea rubens. Native to North America.

Also known as Picea sitchensis. The pine cone of the largest species of spruce trees.

Sitka Spruce Pine Cone

Also known as Picea sitchensis. The pine cone of the largest species of spruce trees.

Also known as Pinus glabra. The pine cone of a Spruce Pine tree.

Pine Cone of Spruce Pine

Also known as Pinus glabra. The pine cone of a Spruce Pine tree.

Norway spruce is the common name of <I>Picea excelsa</I>.

Norway Spruce

Norway spruce is the common name of Picea excelsa.

Also known as Picea glauca. A spruce tree native to the northern half of North America.

White Spruce Pine Cone

Also known as Picea glauca. A spruce tree native to the northern half of North America.