BRISTLECONE PINE (_Pinus aristata_) owes its name to the sharp bristles

on the tips of the cone scales. It is known also as foxtail pine and

hickory pine. The latter name is given, not because of toughness, but

on account of the whiteness of the sapwood. It is strictly a high

mountain tree, running up to the timber line at 12,000 feet, and seldom

occurring below 6,000 or 7,000 feet. It maintains its existence under

adverse circumstances, its home being on dry, stony ridges, cold and

stormy in winter, and subject to excessive drought during the brief

growing season. Trees of large trunks and fine forms are impossible

under such conditions. The bristlecone pine’s bole is short, tapers

rapidly and is excessively knotty. The species reaches its best

development in Colorado. Though it is seldom sawed for lumber, it is of

much importance in many localities where better material is scarce. In

central Nevada many valuable mines were developed and worked by using

the wood for props and fuel. Charcoal made of it was particularly

important in that region, and it was carried long distances to supply

blacksmith shops in mining camps. Railways have made some use of it for

ties. Though rough, it is liked for fence posts. The resin in the wood

assists in resisting decay, and posts last many years in the dry regions

where the tree grows. Ranchmen among the high mountains build corrals,

pens, sheds, and fences of it; but the fibers of the wood are so twisted

and involved that splitting is nearly impossible, and round timbers only

are employed. The bristlecone pine can never be more important in the

country’s lumber supply than it is now. It occupies waste land where no

other tree grows, and it crowds out nothing better than itself. It

clings to stony peaks and wind-swept ridges where the ungainly trunks

are welcome to the traveler, miner, or sheepherder who is in need of a

shed to shelter him, or a fire for his night camp. In situations exposed

to great cold and drying winds, the bristlecone pine is a shrub, with

little suggestion of a tree, further than its green foliage and small

cones. The needles are in clusters of five. They cling to the twigs for

ten or fifteen years. The seeds are scattered about the first of

October, and the wind carries them hundreds of feet. They take root in

soil so sterile that no humus is visible. Young trees and the small

twigs of old ones present a peculiar appearance. The bark is chalky

white, but when the trees are old the bark becomes red or brown.

FOXTAIL PINE (_Pinus balfouriana_) owes its name to the clustering

of its needles round the ends of the branches, bristling like a

fox’s tail. The needles are seldom more than one and one-half inches

in length, and are in clusters of fives. They cling to the branches

ten or fifteen years before falling. The cones are about three

inches long, and are armed with slender spines. The tree is strictly

a mountain species and grows at a higher altitude than any other

tree in the United States, although whitebark pine is not much

behind it. It reaches its best development near Mt. Whitney,

California, where it is said to grow at an altitude of 15,000 feet

above sea level. It has been officially reported at Farewell Gap, in

the Sierra Nevada mountains, at an altitude of 13,000. At high

altitudes it is scrubby and distorted, but in more favorable

situations it may be sixty feet high and two in diameter. On high

mountains it is generally not more than thirty feet high and ten

inches in diameter. It is of remarkably slow growth, and

comparatively small trees may be 200 or 300 years old. The wood is

moderately light, is soft, weak, brittle. Resin passages are few and

very small. The wood is satiny and susceptible of a good polish, and

would be valuable if abundant. The seeds are winged and the wind

scatters them widely, but most of them are lost on barren rocks or

drifts of eternal snow. The untoward circumstances under which the

tree must live prevent generous reproduction. It holds its own but

can gain no new foothold on the bleak and barren heights which form

its environment. The dark green of its foliage makes the belts of

foxtail pines conspicuous where they grow above the timber line of

nearly all other trees. Its range is confined to a few of the

highest mountains of California, particularly about (but not on) Mt.

Shasta and among the clusters of peaks about the sources of Kings

and Kern rivers. Those who travel and camp among the highest

mountains of California are often indebted to foxtail pine for their

fuel. Near the upper limit of its range it frequently dies at the

top, and stands stripped of bark for many years. The dead wood,

which frequently is not higher above the ground than a man’s head,

is broken away by campers for fuel, and it is often the only

resource.

[Illustration]

LONGLEAF PINE

[Illustration: LONGLEAF PINE]

LONGLEAF PINE

(_Pinus Palustris_)

Longleaf is generally considered to be the most important member of the

group of hard or pitch pines in this country[2]. It is known by many

names in different parts of its range, and outside of its range where

the wood is well known.

[2] There is no precise agreement as to what should be included in

the group of hard pines in the United States, but the following

twenty-two are usually placed in that class: Longleaf Pine (_Pinus

palustris_), Shortleaf Pine (_Pinus echinata_), Loblolly Pine

(_Pinus tæda_), Cuban Pine (_Pinus heterophylla_), Norway Pine

(_Pinus resinosa_), Western Yellow Pine (_Pinus ponderosa_),

Chihuahua Pine (_Pinus chihuahuana_), Arizona Pine (_Pinus

arizonica_), Pitch Pine (_Pinus rigida_), Pond Pine (_Pinus

serotina_), Spruce Pine (_Pinus glabra_), Monterey Pine (_Pinus

radiata_), Knobcone Pine (_Pinus attenuata_), Gray Pine (_Pinus

sabiniana_), Coulter Pine (_Pinus coulteri_), Lodgepole Pine (_Pinus

contorta_), Jack Pine (_Pinus divaricata_), Scrub Pine (_Pinus

virginiana_), Sand Pine (_Pinus clausa_), Table Mountain Pine

(_Pinus pungens_), California Swamp Pine (_Pinus muricata_), Torry

Pine (_Pinus torreyana_).

The names southern pine, Georgia pine, and Florida pine are not well

chosen, because there are other important pines in the regions named.

Turpentine pine is a common term, but other species produce turpentine

also, particularly the Cuban pine. Hard pine is much employed in

reference to this tree, and it applies well, but it describes other

species also. Heart pine is a lumberman’s term to distinguish this

species from loblolly, shortleaf, and Cuban pines. The sapwood of the

three last named is thick, the heartwood small, while in longleaf pine

the sap is thin, the heart large, hence the name applied by lumbermen.

In Tennessee where it is not a commercial forest tree, it is called

brown pine, and in nearly all parts of the United States it is spoken of

as yellow pine, usually with some adjective as “southern,” “Georgia,” or

“longleaf.” The persistency with which Georgia is used as a portion of

the name of this tree is due to the fact that extensive lumbering of the

longleaf forests began in that state. The center of operations has since

shifted to the West, and is now in Mississippi, Louisiana, and Texas.

The tree has many other names, among them being pitch pine and fat pine.

These have reference to its value in the naval stores industry. The name

longleaf pine is now well established in commercial transactions. It has

longer leaves than any other pine in this country. They range in length

from eight to eighteen inches. The needles of Cuban pine are from eight

to twelve inches; loblolly’s are from six to nine; and those of

shortleaf from three to five.

Longleaf pine’s geographic range is more restricted than that of

loblolly and shortleaf, but larger than the range of Cuban pine.

Longleaf occupies a belt from Virginia to Texas, following the tertiary

sandy formation pretty closely. The belt seldom extends from the coast

inland more than 125 miles. The tree runs south in Florida to Tampa bay.

It disappears as it approaches the Mississippi, but reappears west of

that river in Louisiana and Texas. Its western limit is near Trinity

river, and its northern in that region is near the boundary between

Louisiana and Arkansas.

Longleaf attains a height of from sixty to ninety feet, but a few trees

reach 130. The diameters of mature trunks range from one foot to three,

usually less than two. The leaves grow three in a bundle, and fall at

the end of the second year. They are arranged in thick, broom-like

bunches on the ends of the twigs. It is a tree of slow growth compared

with other pines of the region. Its characteristic narrow annual rings

are usually sufficient to distinguish its logs and lumber from those of

other southern yellow pines. Its thin sapwood likewise assists in

identification. The proportionately high percentage of heartwood in

longleaf pine makes it possible to saw lumber which shows little or no

sapwood. It is difficult to do that with other southern pines.

The wood is heavy, exceedingly hard for pine, very strong, tough,

compact, durable, resinous, resin passages few, not conspicuous;

medullary rays numerous, not conspicuous; color, light red or orange,

the thin sapwood nearly white. The annual rings contain a large

proportion of dark colored summerwood, which accounts for the great

strength of longleaf pine timber. The contrast in color between the

springwood and the summerwood is the basis of the figure of this pine

which gives it much of its value as an interior finish material,

including doors. The hardness of the summerwood provides the wearing

qualities of flooring and paving blocks. The coloring matter in the body

of the wood protects it against decay for a longer period than most

other pines. This, in connection with its hardness and strength, gives

it high standing for railroad ties, bridges, trestles, and other

structures exposed to weather.

Longleaf pine is as widely used as any softwood in this country. It

serves with hardwoods for a number of purposes. It has been a timber of

commerce since an early period, and was exported from the south Atlantic

coast long before the Revolutionary war; but it was later than that when

it came into keen competition with the Riga pine of northern Europe. It

has since held its own in the European markets, and its trade has

extended to many other foreign countries, particularly to the republics

of South and Central America, Mexico, and the West Indies.

It did not attain an important position in the commerce of this country

until after the Civil war, but it had a place in shipbuilding before

that time, and it has held that place. The builders of cars employ large

quantities for frames and other parts of gondolas, box cars, and

coaches. Over 175,000,000 feet were so used in 1909 in Illinois. It is

the leading car building timber in this country. Its great strength,

hardness, and stiffness give it that place.

It is scarcely less important as an interior wood for house finish. It

is not so much its strength as its beauty that recommends it for that

purpose. Its beauty is due to a combination of figure and color.

Splendid variety is possible by carefully selecting the material.

Manufacturers of furniture, fixtures, and vehicles are large users of

longleaf pine. In these lines its chief value is due to strength.

In the naval stores industry in this country, it is more important than

all other species combined. For a century and a half it has supplied

this country and much of the rest of the world. The principal

commodities made from the resin of this tree are spirits of turpentine

and rosin. These two articles are produced by distilling the resin which

exudes from wounds in the tree. The distillate is spirits of turpentine,

the residue is rosin. The manufacture of naval stores has destroyed tens

of thousands of trees in the past; but better methods are now in use and

loss is less. Georgia and South Carolina were once the center of naval

stores production; but it has now moved to Louisiana and Florida.

The supply of longleaf pine has rapidly decreased during the past twenty

years, and though the end is not yet at hand, it is approaching. Young

trees are not coming on to take the place of those cut for lumber. They

grow slowly at best, and a new forest could not be produced in less than

a hundred years. Both protection and care have been lacking. Fire

usually kills seedlings in their first or second year. The result is

that many extensive tracts where longleaf pine once grew in abundance

have few young and scarcely any old trees now. As far as can be

foreseen, this valuable timber will reach its end when existing stands

have been cut.

CUBAN PINE (_Pinus heterophylla_). The Cuban pine has several local

names; slash pine in Georgia, Florida, Alabama, and Mississippi; swamp

pine in Florida, Alabama, and Mississippi; meadow pine in Florida and

Mississippi; pitch pine in Florida; and spruce pine in Alabama. Its

range is confined to the coast region from South Carolina to Louisiana,

from sixty to one hundred miles inland. It is the only pine in the

extreme south of Florida. The wood is heavy, hard, very strong, tough,

compact, durable, resinous, the resin passages few but conspicuous, rich

dark orange color, the sapwood often nearly white. The annual ring is

usually more than half dark colored summerwood. The Cuban pine grows

rapidly, quickly appropriates vacant ground, and the species is

spreading. Its needles, from eight to twelve inches long, fall the

second year. The wood possesses nearly the strength, hardness, and

stiffness of longleaf pine, and the trunks are as large. The two woods

which are so similar in other respects differ in figure, owing to the

wider annual rings of the Cuban pine. The sapwood of the latter species

greatly exceeds in thickness that of longleaf pine. For that reason it

is often mistaken for loblolly pine. Cuban pine never goes to market

under its own name, but is mixed with and passes for one of the other

southern yellow pines.

SAND PINE (_Pinus clausa_). This tree is generally twenty or thirty feet

high, and eight or twelve inches in diameter. Under favorable conditions

it attains a height of sixty or eighty feet and a diameter of two. The

leaves are two or three inches long, and fall the third and fourth

years. Its range is almost wholly in Florida but extends a little over

the northern border. It grows as far south as Tampa on the west coast,

and nearly to Miami on the east. It is not much cut for lumber because

of its small size and generally short, limby trunk. In a few localities

shapely boles are developed, and serviceable lumber is made. It is a

poor-land tree, as its name implies. The cones adhere to the branches

many years, and may be partly enclosed in the growing wood.

[Illustration]

SHORTLEAF PINE

[Illustration: SHORTLEAF PINE]

SHORTLEAF PINE

(_Pinus Echinata_)

In the markets the lumber of this species is known as yellow pine,

southern yellow pine, and sap pine, and in some localities the term

shortleaf is used. The latter is descriptive, and can be easily

understood when reference is made to the living tree, because its short

needles distinguish it from its associates in the pine forest; but in

speaking of lumber only, the reference to the leaves has less meaning,

particularly to one who is not acquainted with the tree’s appearance.

Its wood so closely resembles that of Cuban and loblolly pine that they

are not easily distinguished by sight alone. In the East the name

Carolina pine or North Carolina pine is much used, but it is not often

heard west of the Allegheny mountains. Referring to the manner and

locality of its growth it is called slash pine in North Carolina and

Virginia, old-field pine in Alabama and Mississippi, and poor-field pine

in Florida. Its tendency to take possession of abandoned ground has

given it these names. It is occasionally called pitch pine in Missouri.

That name would not distinguish it in most parts of the South where

several species of pitch pine grow. In some regions it is known as

spruce pine, but the name is not based on any characteristic of the

living tree or of its wood. In North Carolina and Alabama, and in

literature, it is sometimes known as rosemary pine, but that name

applies rather to fine timber cut from any southern yellow pine, than to

this species in particular. In Delaware it is known as shortshat and in

Virginia as bull pine. To those who are familiar with the tree’s

appearance, the name shortleaf pine is most accurate in definition.

The commercial range of shortleaf pine has contracted to a considerable

extent since the settlement of the country. It once grew as far north as

Albany, New York, and from fifty to a hundred years ago it was lumbered

in Pennsylvania, Maryland, and West Virginia in regions where it has now

ceased to exist, or is found only as scattered trees. Its geographical

range is now usually given from New York to Florida, west to Missouri

and Oklahoma and northeastern Texas. It is important in lumber

operations in North Carolina and southward, and westward to the limits

of its range. The tree reaches its largest size and attains its finest

stands west of the Mississippi river. In average size it exceeds

longleaf pine. It may reach a height above 100 feet and a trunk diameter

of three or four. Squared timbers of large size were formerly exported

from Virginia and North Carolina. Similar sizes cannot now be procured

there.

Shortleaf pine varies greatly in the quality and amount of sapwood. It

is normally a thick sap tree, but midway between loblolly and longleaf.

The young tree increases rapidly in size until it is from six to ten

inches in diameter, and the yearly rings are wide. The rate of growth

then decreases and during the rest of its life the rings are narrow.

This feature is often of assistance in identifying southern yellow pine

logs or large timbers which contain the heart and also the sap. Wide

rings near the heart, followed by narrow ones, and a thick sapwood are

pretty good evidence that the timber--if a southern yellow pine--is

shortleaf pine. The rule is not absolute; for a high authority on timber

has said that no infallible rule can be laid down for distinguishing by

sight alone the woods of the four southern yellow pines--longleaf,

shortleaf, Cuban, and loblolly.

The wood of shortleaf pine is strong, heavy, hard, and compact; very

resinous, resin passages large and numerous; medullary rays numerous,

conspicuous; color, orange, the sapwood nearly white. The thoroughly

seasoned wood weighs thirty-eight pounds per cubic foot. It is about

five pounds heavier than loblolly pine, five pounds lighter than

longleaf, and nearly nine pounds lighter than Cuban pine. There is so

great a variation in weight of shortleaf pine that only general averages

have value.

Shortleaf pine is not as strong as longleaf, and is not so extensively

employed in heavy structural work, but in certain other lines it has the

advantage of longleaf. It is softer, and door and sash makers like it

better. It is easier to work, and when manufactured into doors and

interior finish many consider it superior to longleaf. The wide rings of

annual growth in the heartwood show fine contrast in color, and when

these are developed by stains and fillers, the grain or figure of the

wood is very pleasing. Where hardness is not an essential, it is much

used for floors. It is in great demand by builders of freight cars, but

less for frames and heavy beams than for siding and decking. Car

builders in Illinois bought 77,000,000 feet of it in 1909. That was

nearly half of the entire quantity of this wood used in the state. The

second largest users in Illinois were manufacturers of sash, doors,

blinds, and general millwork. If the whole country is considered, this

is probably the largest use of the wood. Makers of boxes and crates in

the South employ large quantities.

The depletion of shortleaf forests has progressed rapidly, but in the

absence of reliable statistics it is impossible to give figures by

decades or years. In 1880 an estimate placed the amount west of the

Mississippi at 95,000,000,000 feet. That was probably less than half of

the country’s supply at that time. In 1911 the Commissioner of

Corporations estimated that the combined remaining stand of loblolly

and shortleaf pine in the South was 152,000,000,000 feet. It is doubtful

if half of it was shortleaf. In that case, there was less shortleaf pine

in the entire South in 1911 than there was west of the Mississippi river

thirty years before.

Rapid decrease in total stand of a species does not necessarily imply

exhaustion. The cut will fall off as scarcity pinches. In the case of

shortleaf pine, an influence is active which will bring good results in

the future. This pine reproduces with vigor. Its small triangular seeds

are equipped with wings which carry them into vacant areas where they

quickly germinate if they fall on mineral soil. The seedling trees

suffer much from fire, but their power of resistance is fairly good, and

dense new growth is coming on in many localities. A good many years are

required to bring a seedling to maturity, but it will reach sawlog size

sometime, and there is no question but that the market will welcome it.

The shortleaf pine is peculiar among eastern softwoods in one respect.

Stumps will sprout. That occurs oftener west of the Mississippi than

east. However, the tree’s ability to send up sprouts from the stump is

of little practical value, since the sprouts seldom or never develop

into merchantable trees. In that respect it differs from the other

well-known sprouting softwood of this country, the California redwood,

whose numerous sprouts grow into large trunks.

SPRUCE PINE (_Pinus glabra_). This is one of the softest and the whitest

of the hard pines of this country. Nothing but its scarcity stands in

the way of its becoming an important timber tree. The best of it is a

satisfactory substitute for white pine in the manufacture of doors. It

grows rapidly, and the wide rings contain a high percentage of light

colored springwood, though there is enough summerwood of darker color to

give the dressed lumber a character. It weighs about the same as

northern white pine, but is weaker. In South Carolina and Florida it is

called white pine, but the name spruce is more general. It is known also

as kingstree, poor pine, Walter’s pine, and lowland spruce pine. Its

range is restricted to southern South Carolina, northern Florida and

southern Alabama and Mississippi, and northeastern Louisiana. Its leaves

are from one and a half to three inches in length, grow two in a bundle,

and fall the second and third years. Large and well-formed trunks attain

a height of from eighty to 100 feet and a diameter from two to nearly

three. It reaches its best development in northwestern Florida, and its

light, symmetrical trunks have long been in use there as masts for small

vessels. It is too scarce to attract much attention from lumbermen, but

they are well acquainted with its good qualities, and some of them take

pains to keep the lumber separate from associated pines, and sell it to

manufacturers of doors and interior finish. The bark bears considerable

resemblance to spruce, which probably accounts for the name of the tree.

TABLE MOUNTAIN PINE (_Pinus pungens_). The French botanist, Michaux

the younger, has been criticized for the statement which he made

more than a hundred years ago that this species was confined to a

certain flat-topped mountain in the southern Appalachian ranges, and

he called it table mountain pine. It lacked much of being confined

within the narrow limits where it was discovered. It grows in New

Jersey, Pennsylvania, Maryland, District of Columbia, Virginia, West

Virginia, Kentucky, Tennessee, North Carolina, and Georgia. Its

other names are prickly pine, hickory pine, and southern mountain

pine. It supplies timber in all parts of its range, but, except in

very restricted localities, it is not abundant. The lumber in the

market is seldom distinguished from other pines, but some of the

Tennessee mills sell it separately to local customers. The wood is

medium light, rather strong (about like _Pinus rigida_, or pitch

pine, which it resembles in other respects), is less stiff than

white pine, and is resinous. The thick sapwood is nearly white, the

heartwood brown. It is not a durable timber in contact with the

ground. Its fuel value is low. Its needles grow in clusters of two,

and are generally less than two inches long. The cones which are in

clusters of from three to eight, and from two to three and a half

inches long, are armed with stout, curved hooks. The cones shed

their seeds irregularly during two or three years, and sometimes

hang on the trees for twenty years. In open ground this pine

occasionally produces fertile seeds when only a few feet high. Its

forest form and open-ground form are quite different. In thick woods

the tree is tall, with good bole, but in open ground it is only

twenty or thirty feet high, and is covered with limbs almost to the

ground.

[Illustration]

LOBLOLLY PINE

[Illustration: LOBLOLLY PINE]

LOBLOLLY PINE

(_Pinus Tæda_)

American Forest Trees · 第 3 / 52 段