Also known as Pinus arizonica. The pine cone of an Arizona Pine tree.

Pine Cone of Arizona Pine

Also known as Pinus arizonica. The pine cone of an Arizona Pine tree.

Also known as Pinus muricata, mostly found in California.

Bishop Pine Cone

Also known as Pinus muricata, mostly found in California.

Also known as Pinus ponderosa. The pine cone of a Bull Pine tree.

Pine Cone of Bull Pine

Also known as Pinus ponderosa. The pine cone of a Bull Pine tree.

Also known as Pinus caribaea. The pine cone of a Caribbean Pine tree.

Pine Cone of Caribbean Pine

Also known as Pinus caribaea. The pine cone of a Caribbean Pine tree.

The pine cone of the Chihuahua Pine tree.

Pine Cone of Chihuahua Pine

The pine cone of the Chihuahua Pine tree.

Also known as Pinus edulis. The pine cone of a Colorado Pinyon tree.

Pine Cone of Colorado Pinyon

Also known as Pinus edulis. The pine cone of a Colorado Pinyon tree.

Corsican pine is the common name of pinus laricio. The tree grows between one hundred and one hundred fifty feet tall. The tree is native to southern Europe.

Corsican Pine

Corsican pine is the common name of pinus laricio. The tree grows between one hundred and one hundred…

Also known as Pinus coulteri. The pine cone of a Coulter Pine tree.

Pine Cone of Coulter Pine

Also known as Pinus coulteri. The pine cone of a Coulter Pine tree.

This shows the cluster of two leaves of the Gray Pine, Pinus divaricata, (Keeler, 1915).

Gray Pine Needles

This shows the cluster of two leaves of the Gray Pine, Pinus divaricata, (Keeler, 1915).

This shows the cluster of two leaves, bright green, of the Jersey Pine, Pinus virginiana, (Keeler, 1915).

Jersey Pine Needles

This shows the cluster of two leaves, bright green, of the Jersey Pine, Pinus virginiana, (Keeler, 1915).

Also known as Pinus attenuata. The pine cone of a Knobcone Pine tree.

Pine Cone of Knobcone Pine

Also known as Pinus attenuata. The pine cone of a Knobcone Pine tree.

This shows the cluster of three, slightly twisted leaves of the Loblolly Pine, Pinus taeda, (Keeler, 1915).

Loblolly Pine Needles

This shows the cluster of three, slightly twisted leaves of the Loblolly Pine, Pinus taeda, (Keeler,…

Also known as Pinus taeda. The pine cone of a Southeastern United States pine tree.

Pine Cone of Loblolly Pine

Also known as Pinus taeda. The pine cone of a Southeastern United States pine tree.

Also known as Pinus contorta. The pine cone of a Lodgepole Pine tree, commonly found in western North America.

Pine Cone of Lodgepole Pine

Also known as Pinus contorta. The pine cone of a Lodgepole Pine tree, commonly found in western North…

Also known as Pinus serotina. The pine cone of a Marsh Pine tree.

Pine Cone of Marsh Pine

Also known as Pinus serotina. The pine cone of a Marsh Pine tree.

Also known as Pinus cembroides. A pine cone of a Mexican Pinyon tree.

Pine Cone of Mexican Pinyon

Also known as Pinus cembroides. A pine cone of a Mexican Pinyon tree.

Also known as Pinus radiata. The pine cone of a Monterey Pine tree.

Pine Cone of Monterey Pine

Also known as Pinus radiata. The pine cone of a Monterey Pine tree.

Also known as Pinus quadrifolia. The pine cone of a Parry Pinyon tree.

Pine Cone of a Parry Pinyon

Also known as Pinus quadrifolia. The pine cone of a Parry Pinyon tree.

A pine cone of a Pinus aristata.

Pine Cone of Pinus Aristata

A pine cone of a Pinus aristata.

The common name of pinus bungeana is lace bark pine. The cones are very small.

Cone of Pinus Bungeana

The common name of pinus bungeana is lace bark pine. The cones are very small.

The leaves of pinus contorta are bright green and small, from one to two inches long. The branches are numerous and spreading.

Branch of Pinus Contorta

The leaves of pinus contorta are bright green and small, from one to two inches long. The branches are…

The cones of pinus coulteri are very large, about twelve inches long and six inches in diameter. The cones weigh between four and five pounds.

Cone of Pinus Coulteri

The cones of pinus coulteri are very large, about twelve inches long and six inches in diameter. The…

The pine cone of a Pinus divaricata.

Pine Cone of Pinus Divaricata

The pine cone of a Pinus divaricata.

The common name of pinus excelsa is Bhotan pine. The branches are regularly whorled. The tree grows between sixty and one hundred fifty feet tall.

Branch of Pinus Excelsa

The common name of pinus excelsa is Bhotan pine. The branches are regularly whorled. The tree grows…

Pictured is a branch of pinus longifolia with male catkins. The branches are irregularly and thinly scattered. The bark is rough.

Branch of Pinus Longifolia

Pictured is a branch of pinus longifolia with male catkins. The branches are irregularly and thinly…

The common name of pinus pinaster is cluster pine. The leaves are dark green, stiff, broad, and stout. The leaves are between six and twelve inches long. The cones are yellowish brown and about four inches long.

Branch of Pinus Pinaster

The common name of pinus pinaster is cluster pine. The leaves are dark green, stiff, broad, and stout.…

Illustrated are young trees of pinus ponderosa. It is a useful tree in the Rocky Mountain region.

Pinus Ponderosa

Illustrated are young trees of pinus ponderosa. It is a useful tree in the Rocky Mountain region.

Illustrated is a mature field tree of pinus ponderosa.

Pinus Ponderosa

Illustrated is a mature field tree of pinus ponderosa.

The cones of pinus pyrenaica are about two and a half inches long. The cones are slightly curved and taper to a point.

Cone of Pinus Pyrenaica

The cones of pinus pyrenaica are about two and a half inches long. The cones are slightly curved and…

The pine cone of a Pinus sabiniana.

Pine Cone of Pinus Sabiniana

The pine cone of a Pinus sabiniana.

"Radial longitudinal section of wood of Pinus Sylvestris. a, cambium; b, c, d, e, f, wood cells; f, bordered pits in an early stage of formation, before the thickening ring has arched over the thin portion of cell'wall; t', bordered pit after the thickening mass has arched over the thin cell-wall; st, very large pits where in contact with medullary rays." — Encyclopedia Britanica, 1893

Pinus Sylvestris

"Radial longitudinal section of wood of Pinus Sylvestris. a, cambium; b, c, d, e, f, wood cells; f,…

This shows the cluster of three leaves of the Pitch Pine, Pinus rigida, (Keeler, 1915).

Pitch Pine Needles

This shows the cluster of three leaves of the Pitch Pine, Pinus rigida, (Keeler, 1915).

Also known as Pinus rigida. The pine cone of a Pitch Pine tree.

Pine Cone of Pitch Pine

Also known as Pinus rigida. The pine cone of a Pitch Pine tree.

This shows the cluster of two leaves of the Red Pine, Pinus resinosa, (Keeler, 1915).

Red Pine Needles

This shows the cluster of two leaves of the Red Pine, Pinus resinosa, (Keeler, 1915).

Also known as Pinus resinosa. The pine cone of a Red Pine tree.

Pine Cone of Red Pine

Also known as Pinus resinosa. The pine cone of a Red Pine tree.

Also known as Pinus clausa. A pine tree mostly found in central Florida.

Sand Pine, Pine Cone

Also known as Pinus clausa. A pine tree mostly found in central Florida.

Also known as Pinus echinata. The pine cone of a Shortleaf Pine tree.

Pine Cone of Shortleaf Pine

Also known as Pinus echinata. The pine cone of a Shortleaf Pine tree.

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.

Stone pine and parasol pine are the common names of pinus pinea. The tree grows between fifty and sixty feet tall. This tree is native to the Mediterranean region.

Stone Pine

Stone pine and parasol pine are the common names of pinus pinea. The tree grows between fifty and sixty…

Swiss stone pine is the common name of pinus cembra. The leaves are marked with silver lines and are slender and flexible. The tree grows between fifty and one hundred fifty feet tall.

Swiss Stone Pine

Swiss stone pine is the common name of pinus cembra. The leaves are marked with silver lines and are…

Table mountain pine is the common name of pinus pungens. The cones are rather large, top shaped, and light yellowish brown.

Table Mountain Pine

Table mountain pine is the common name of pinus pungens. The cones are rather large, top shaped, and…

Also known as Pinus pungens. The Table Mountain Pine is native to the Appalachian Mountains.

Table Mountain Pine Cone

Also known as Pinus pungens. The Table Mountain Pine is native to the Appalachian Mountains.

Also known as Pinus contorta, var. murrayana. The pine cone of a Tamarack Pine tree, native to the Cascade Range, Sierra Nevada, and surrounding mountain ranges.

Pine Cone of Tamarack Pine

Also known as Pinus contorta, var. murrayana. The pine cone of a Tamarack Pine tree, native to the Cascade…

Also known as Pinus torreyana. The Torrey Pine is the rarest pine species in the United States, and is generally found on the West Coast.

Torrey Pine Cone

Also known as Pinus torreyana. The Torrey Pine is the rarest pine species in the United States, and…

Also known as Pinus virginiana.

Virginia Pine, Pine Cone

Also known as Pinus virginiana.

Also known as Pinus monticola. A pine cone of the Western White Pine tree.

Pine Cone of Western White Pine

Also known as Pinus monticola. A pine cone of the Western White Pine tree.

This shows the cluster of five leaves of the White Pine, Pinus strobus, (Keeler, 1915).

White Pine Needles

This shows the cluster of five leaves of the White Pine, Pinus strobus, (Keeler, 1915).

Also known as Pinus albicaulis. A pine cone from a Whitebark Pine tree.

Pine Cone of Whitebark Pine

Also known as Pinus albicaulis. A pine cone from a Whitebark Pine tree.

This shows the cluster of two leaves, sometimes three of four, of the Yellow Pine, Pinus echinata, (Keeler, 1915).

Yellow Pine Needles

This shows the cluster of two leaves, sometimes three of four, of the Yellow Pine, Pinus echinata, (Keeler,…