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| The pine family is the largest of the coniferous group of trees. It includes 9 genera and about 200 species that are widely scattered throughout the Northern Hemisphere. A few are found south of the equator. Many products derived from this family are associated with humans' daily lives and activities. Most of the structural timbers used to fabricate homes; most of the pulpwood used in the manufacture of newspapers, magazines, and countless other paper products; and chemical derivatives used in the manufacture of rayon, cellophane, turpentine, and plastics are derived from the pine family. Certain pharmaceutical preparations also contain compounds from this family of plants. Trees of this family are also prized ornamentals. |
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| Pinus palustris
longleaf pine |
The longleaf pine is a tree, 80-100 feet in height, 3 feet in diameter. It is characterized by a long, clear symmetrical bole, a small open crown, with long, bright green tufts of needles at the tips of stout branches, and a deep taproot supported by numerous wide-spreading lateral roots. Within the first 3-7 years of development, the aerial portion of the stem consists of a cluster of needles which resemble a large tuft of grass. This stage of this tree's development is commonly known as the grass stage. Once the root system has become thoroughly established, normal stem elongation begins. Leaves Leaves are needle-like, 8-18 inches in length, 3 needles per fascicle.
Leaves occur at the ends of stout branches in dense, ball-like tufts.
Leaves are bright green, slender, flexible, and 3-sided. These leaves
begin to fall off in the second season.
Twigs The twigs are orange-brown and stout.
The bark is orange-brown and coarsely scaly. Scales are thin and
papery. The bark is plated on the largest trees.
The longleaf pine grows on flat, sandy, and gravely soils of the coastal
plain. It often grows on thin soils underlain by a hardpan.
In the southern ends of its range, it grows on ascending low hills and
ridges. It is found on the southern Atlantic and Gulf coastal plains
from southern Virginia to eastern Texas. It is not found in the Mississippi
River Valley. It is found from sea level to 1,900 feet in northern
Alabama.
The longleaf pine is one of the largest and well-known southern yellow
pines. History records indicate that some of the choicest stands
of longleaf were set aside by the English Crown for the exclusive use of
the British Navy. These trees were ideal for the masts and spars
of sailing vessels. The resinous materials were suited for caulking
the planking of hulls and decks. When the supply of high-grade white
pine began to dwindle, lumbermen looked to southern pinelands. By
1909, the south was the principal lumbering center of the nation.
About half of the annual cut was longleaf pine. Today, this tree
is used in the manufacture of various products. It is also a very
important component of the habitat of the red cockaded woodpecker.
Click on the link for more information on the longleaf
pine sandhill ecosystem.
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| Pinus echinata
shortleaf pine |
Habit
The shortleaf pine is a tree, 80-100 feet in height, 2-3 feet in diameter.
It is characterized by a long, clear symmetrical unbuttressed bole, a small,
narrow, pyramidal crown, and a very large taproot. This pine has
unusual regenerative capabilities during early juvenile development.
When the original stem of a seedling or sapling has been destroyed, sprouts
arise from the root collar that are capable of growing to maturity.
Leaves are needle-like, 3-5 inches in length, 2-3 needles per fascicle.
Leaves are bright green, slender, and flexible. Leaves are often
persistent through the fourth season. Leaves will occasionally appear
in tufts along the bole from adventitious buds.
The twigs are pale green with a purplish layer during the first season,
becoming smooth and reddish-brown.
The bark is nearly black and rough on young stems. On older stems,
it is reddish-brown and separated into irregular, flat, scaly plates, with
many small resin pockets scattered through the corky layers.
The shortleaf pine is most common in pure or mixed stands on dry upland
soils, but it can grow on a variety of sites. It is found in the
eastern U.S. from central New Jersey south and west to northern Florida,
southern Missouri, eastern Oklahoma, and southeastern Texas. It is
not found on the upper slopes of the Appalachian Mountains nor in the Mississippi
River Valley.
The wood of this tree is firm, moderately heavy, and well suited for
many uses, especially structural timbers, planing-mill products, and pulp.
It is sometimes used as an ornamental, but needles, cones, and dead branches
drop off frequently, rendering this tree potentially unsuitable on lawns.
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| Pinus taeda
loblolly pine |
Habit
Loblolly pine is a tree, 90-110 feet in height, 2-4 feet in diameter. It is characterized by a long, clear, symmetrical, occasionally buttressed bole, a large open crown of spreading ascending limbs, and a well-developed lateral root system. Leaves Leaves are needle-like, 6-9 inches in length, 3 (rarely 2) needles per
fascicle. Leaves are gray-green, slender, occasionally twisted, and
somewhat stiff. Leaves are often persistent through the end of the
second season.
The twigs are reddish-brown to dark yellow-brown.
The bark is nearly black and scaly on young stems. On older stems,
it is 1-2 inches thick and divided into irregular, dark brown, scaly blocks.
On the largest trees, it is separated into large, irregular, scaly plates.
Loblolly pine is widely scattered across a variety of sites throughout the forests of the coastal plains and lower Piedmont plateau. It is very vigorous on fallow fields and cutover lands. It will often fully restock such areas in a relatively short time. In virgin forests, it occurs as an occasional tree on moist soils and along streams, in association with hardwoods. It is found on the coastal plains and lower Piedmont from southern New Jersey to central Florida, southern Oklahoma, and southeastern Texas. It is not found in the lower Mississippi Valley. Use The wood of this tree is of lower quality than that of longleaf or shortleaf
pines in terms of lumber, but it is very suitable as pulpwood for the production
of paper products.
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| Pinus elliottii var. elliottii
slash pine |
Habit
Slash pine is a tree, 100-120 feet in height, 2-4 feet in diameter. It is characterized by a long, clear, symmetrical bole, a deep root system, and a dense, round-topped crown of horizontal and ascending branches. Leaves Leaves are needle-like, 8-12 inches in length, 2-3 needles per fascicle.
Leaves are dark, glossy green, stiff, and tufted at the ends of branches.
Leaves are often persistent through the end of the second season.
The twigs are orange-brown and stout.
The bark is deeply furrowed on young stems, becoming 1-2 inches thick
and broken into large, flat plates, covered with large, thin. papery, silvery-orange
scales.
Slash pine grows well on low ground, hammocks, in swamps, and along streams. It is very aggressive and commonly occupies cutover lands formerly occupied by other species. It is found in the Gulf states south through several West Indian islands to Guatemala and Honduras in Central America. Use The wood of this tree is used for railroad ties, fuel, lumber, and pulp.
It is often used as a roadside ornamental in several areas of the Deep
South.
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| Pinus elliottii var. densa
south Florida slash pine |
| Habit
The south Florida slash pine is a tree, 100-120 feet in height, 2-4
feet in diameter. It differs from the elliottii variety in
that the stems of the seedlings of the elliottii variety are thin and pencil-like,
elongating normally with the relatively sparse needle fascicles.
The stems of the variety densa seedlings are thick, somewhat carrot-like,
not elongating appreciably for several years and bearing a relative abundance
of needle fascicles.
Leaves are needle-like, 8-12 inches in length, 2-3 needles per fascicle. Leaves are dark, glossy green, stiff, and tufted at the ends of branches. Leaves are often persistent through the end of the second season. Flowers
The twigs are orange-brown and stout.
The bark is deeply furrowed on young stems, becoming 1-2 inches thick
and broken into large, flat plates, covered with large, thin. papery, silvery-orange
scales.
South Florida slash pine grows well on low ground, hammocks, in swamps,
and along streams. It is very aggressive and commonly occupies cutover
lands formerly occupied by other species. It is found in extreme
south Florida and the lower Florida Keys.
The wood of this tree is used for railroad ties, fuel, and lumber.
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| Pinus serotina
pond pine |
| Habit
The pond pine is a somewhat smaller pine tree, 60-70 feet in height,
1-2 feet in diameter. It is characterized by a clear, symmetrical
bole and a small open crown. Like shortleaf pine, young trees of
this species are also capable of producing sprouts from the root collar.
This tree is a natural variety of pitch pine, a tree found in the northeastern
United States and through the Appalachian Mountains.
Leaves are needle-like, 6-8 inches in length, 3 needles per fascicle.
Leaves are yellow-green, stiff, often twisted, and are supported at right
angles to the twig, commonly in tufts along the bole from adventitious
buds. Leaves are often persistent through the end of the second
season.
The twigs are stout, rigid, at first bright green but becoming orange-brown.
The bark very dark and scaly on young stems. On more mature trees
the bark is 1-2 inches thick, yellowish-brown, and separated into large,
irregular, flat plates by narrow seams and fissures.
Pond pine grows in swamps and the low, wet flats of the pocosins.
It is found from southern New Jersey south along the coastal plain to northern
Florida and central Alabama.
The pond pine is an important pulpwood species.
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| Pinus glabra
spruce pine |
| Habit
Spruce pine is a moderate-sized pine tree, 80-90 feet in height, 1-3
feet in diameter. This tree is characterized by its slender, dark
green, twisted needles and silvery-gray, furrowed, oak-like bark.
Leaves are needle-like, 1-3 inches in length, 2 needles per fascicle,
rarely 3. Leaves are dark green, twisted, and flexible.
The twigs are brown to gray and are smooth.
The bark is brown to gray, becoming rigid and grooved. On large trunks, ridges are dark gray and laminated with hard, tight layers, not breaking into plates as is the case with other pines. Habitat The spruce pine is scattered and intermixed with hardwoods on moist,
well-drained forests of uplands, bluffs, slopes of ravines, and in floodplain
forests where elevated enough so that flooding is shallow brief.
It is found on the coastal plain from South Carolina to north Florida;
west to southern Mississippi and southeastern Louisiana.
The wood from this tree is sometimes used for pulp, fuel, and sawtimber.
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| Pinus clausa var. clausa
Ocala sand pine |
| Habit
Ocala sand pine is a small tree, seldom more than 25 feet in height,
1 foot in diameter. This tree gets its name from its occurrence on
the sandy coastal soils of peninsular Florida. It grows in pure stands
where their long fibrous roots impede the migration of shifting sands.
Leaves are needle-like, 2-3.5 inches in length, 2 needles per fascicle,
rarely 3. Leaves are dark green and flexible. Leaves
are often persistent through the end of the second season.
The twigs are tan or grayish-tan.
The bark becomes very thick and broken into laminated gray plates, with
brown surfaces exposed beneath.
Ocala sand pine inhabits deep, well-drained, relatively infertile sands
of ridges and hills, stabilized coastal dunes, sometimes in dense, even-aged
stands. It is commonly in association with wintergreen shrubs and
deciduous scrub oaks intermixed. It is found throughout much of peninsular
Florida.
Sand pine is sometimes used for pulpwood.
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| Pinus clausa var. immuginata
Choctawhatchee sand pine |
| Habit
Choctawhatchee sand pine is a small tree, seldom more than 25 feet in
height, 1 foot in diameter. This tree gets its name from its occurrence
on the sandy coastal soils of the Florida panhandle and southwestern Alabama.
It grows in pure stands where their long fibrous roots impede the migration
of shifting sands.
Leaves are needle-like, 2-3.5 inches in length, 2 needles per fascicle,
rarely 3. Leaves are dark green and flexible. Leaves
are often persistent through the end of the second season.
The twigs are tan or grayish-tan.
The bark becomes very thick and broken into laminated gray plates, with
brown surfaces exposed beneath.
Ocala sand pine inhabits deep, well-drained, relatively infertile sands
of ridges and hills, stabilized coastal dunes, sometimes in dense, even-aged
stands. It is commonly in association with wintergreen shrubs and
deciduous scrub oaks intermixed. It is found throughout much of the
Florida panhandle and southwestern Alabama.
Sand pine is sometimes used for pulpwood.
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