The wood of white ash is heavy, hard, strong, elastic, but rather

brittle. It lacks the toughness of hickory. The medullary rays are

numerous, but small and obscure. The color is brown, the sapwood much

lighter, often nearly white. It is not durable in contact with the soil.

Notwithstanding its name, the wood rates low in ash, and its fuel value

is under that of white oak. The states which produce the largest yearly

cut of this species are, ranging downward in the order named: Arkansas,

Ohio, Wisconsin, Kentucky, Indiana, Michigan, and Tennessee.

The uses of white ash are so numerous that they can be presented only in

classes. It goes into almost every wood-using industry, but in different

sections of country certain uses lead. Thus in Illinois the makers of

butter tubs take more of it than any other industry; in Michigan

automobiles lead, and in Arkansas the handle factories are largest

buyers; in Louisiana boat oars consume most; in Alabama and Missouri car

construction is in the lead; in Texas boxes and crates; in North

Carolina wagons; in Kentucky handles; in Maryland musical instruments;

and in Massachusetts furniture. The utilization of ash in these states,

scattered over the eastern half of the United States, indicates fairly

well the wood’s most important lines of usefulness. A considerable

quantity is made into flooring and interior finish. It is classed among

sanitary woods, that is, it does not stain or taint food products by

contact.

The total quantity of merchantable white ash in the country is not

known, but there is still enough to meet demand, and the extent of the

tree’s range makes supplies convenient in nearly all manufacturing

states. The species grows rather rapidly, and trees a hundred or a

hundred and fifty years old yield logs of good size.

TEXAS ASH (_Fraxinus texensis_) has been regarded by some as a variety

of white ash, while others, including Sudworth and Sargent, consider it

a distinct species. It is often called mountain ash where it occurs

among the mountains of western Texas. Its range lies wholly in that

state, and extends from the vicinity of Dallas to the valley of Devil’s

river. The compound leaves are smaller than those of white ash, and are

usually composed of five leaflets. The winged seeds ripen in May, and

are an inch or less in length. The largest trees are fifty feet high and

two or three in diameter; but generally the trees are much smaller. The

wood is strong, heavy, and hard. The annual rings are marked by one or

more rows of open ducts, and the medullary rays are inconspicuous. The

heartwood is light brown, the sapwood lighter. This ash is employed

within its range for various purposes, but it is not of sufficient

abundance to constitute an important commodity. In market it is not

distinguished from white ash.

GREGG ASH (_Fraxinus greggii_) has some peculiarities which make it

worthy of mention as one of the minor species. Its range is in the dry

mountains of western Texas where a number of ashes seem to have put in

an appearance as members of the thinly-peopled vegetable kingdom of that

region. The compound leaves of Gregg ash are seldom three inches long,

and the leaflets are often half an inch long and less than a quarter of

an inch wide. The petioles are winged like the twigs of wing elm. The

undersides of the leaves have small black dots. The winged seeds are as

proportionately small as the leaves. The flowers have not been described

by botanists, for the species is not well known. The largest trees are

scarcely twenty-five feet high and eight inches in diameter. More

frequently they are shrubs from four to twelve feet tall. The wood is

heavy, hard, brown in color and of slow growth.

DWARF ASH (_Fraxinus anomala_) might be mistaken for some other species

were its telltale winged seeds missing. It has lost the leaflets from

its compound leaf, and a single one remains. Occasionally, however, a

stem bearing three leaflets is found. The seeds are equipped with wide,

oblong wings. It is a desert species, and the desolate surroundings of

its habitat explain why nature has dispensed with as much foliage as

possible. It is found in southwestern Colorado, in southern Utah, and on

the western slopes of the Charleston mountains in southern Nevada. Trees

are small and the wood is not of much use for other than fuel, but a few

small ranch timbers are made of it where other kinds are scarce. Trunks

are usually not more than six or seven inches in diameter. The wood is

heavy, hard, and light brown in color.

FRINGE ASH (_Fraxinus cuspidata_) has some difficulty in proving

that it is entitled to be called a tree in the United States, though

southward in Mexico its right to that title is unquestioned. It is

very small where its range extends over the dry ridges and rocky

slopes of southwestern Texas and southern New Mexico and Arizona.

Its compound leaves are five or seven inches long, and the leaflets

which number from three to seven have long, slender tips. The

trowel-shaped fruit is about one inch long. The wood resembles white

ash, but trunks of considerable size are not found. The name refers

to the flowers, and they give this small tree its value for

ornamental purposes. The flowers appear in April and are extremely

fragrant.

[Illustration]

BLACK ASH

[Illustration: BLACK ASH]

BLACK ASH

(_Fraxinus Nigra_)

When George Washington was a surveyor locating land on the upper waters

of the Potomac river, and westward on the Kanawha and Ohio rivers, he

always spoke of this ash as “hoop tree” when he marked it with two or

with three “hacks,” depending upon whether it designated a “corner” or a

“line,” or a “pointer” in the system of surveying then in use. Trees

were used then as landmarks, and were duly recorded in the surveyor’s

field notes, and were described in the deeds when the title to the land

passed from one party to another. It was not unusual, if subsequent

litigation came up, to cut blocks from marked trees to prove that such a

corner was at such a place. The “hacks” or ax marks, were sometimes

healed over and invisible at the bark, but were found deep in the wood.

The rings of growth covering the ax marks afforded an admissible record

of the years that had passed since the survey was made. The selection of

the black ash as a landmark was one of the few instances in which

Washington showed poor judgment; because it is a tree of short life, and

might be expected to die before a great many years.

The name hoop ash is applied to this tree yet. It has always been good

material for barrel hoops, because it splits into thin pieces, and is

sufficiently tough. It is known as basket ash for the same reason. The

New England Indians were making fish baskets of it when the first white

people landed on those shores, and settlers speedily learned the art

from the children of the wilderness. Those untutored savages knew little

of wood technology, but they were able to take advantage of a

peculiarity in the structure of black ash wood, which the white man’s

microscope has revealed to him. The Indians doubtless discovered it

accidentally. The springwood in the annual ring of black ash is made up

of large pores, crowded so closely together that there is really very

little actual wood substance there. In other words, the springwood is

chiefly air spaces. The result is, that billets of black ash are easily

separated into thin strips, the cleavage following the weak lines of

springwood. A little beating and bending causes the annual rings to fall

apart. In some way the Indians found that out, and utilized their

knowledge in manufacturing baskets in which to carry fish, acorns,

hickory nuts, and other forest and water commodities.

The white people extended the scope of application to include chairs and

other furniture in which splits are manipulated. It is worthy of note

that Indians made a similar discovery with northern white cedar or

arborvitæ, which separates into thin pieces by beating and bending.

Barrel makers took advantage of the splitting properties of black ash to

make hoops of it, hence the name hoop ash, or hoop tree as Washington

called it. The name basket ash has a similar origin.

The names swamp ash and water ash refer to situations in which the tree

grows best. It is one of the thirstiest inhabitants of the forest. Its

aggressive roots ramify through the soil and drink up the moisture so

voraciously that if water is not abundant, neighboring trees and plants

may find their roots robbed, and the functions of healthy growth will be

interfered with. This has led to a general belief that black ash poisons

trees that it touches. It simply robs their roots. Carolina and Lombardy

poplars will sometimes do the same thing.

The name black ash by which this tree is now known in most regions where

it grows refers to the color of the large, prominent, shiny, blue-black

buds in late winter and early spring; to the very dark green leaves in

summer--which at a distance resemble the foliage of post oak--and, to

some extent, to the dark brown color of the heartwood, though the wood

is not always a safe means of identification if judged from superficial

appearance only. The form of the tree assists in identifying it; for it

is the slimmest of the ashes, in proportion to its height. Trunks three

feet through are heard of, but few persons have ever seen one much over

twenty inches, and many are about done growing when they are one foot in

diameter. Yet the trunks of such are very tall, perhaps seventy or

eighty feet. Their appearance has been likened to tall, slender columns

of dark gray granite. They often stand so straight that a plummet line

will not reveal a deviation from the perpendicular.

The tree has been called elder-leaved ash. The form of the foliage has

something to do with that name, but the odor more. Crush the leaves, and

they smell like elder. The compound leaves are from twelve to sixteen

inches long; the leaflets range from seven to eleven in number, and the

side leaflets have no stalks. The leaves appear late in spring, and they

fall early in autumn. They drop with the butternut leaves, and like

them, all at once. The seed is winged, and the wing forms a margin

entirely round the seed.

The wood of black ash is rather soft, moderately heavy, tough, but only

moderately strong, not durable in contact with the soil, dark brown in

color with sapwood whiter. The species ranges farther north than any

other ash, and grows in cold swamps and on the low banks of streams and

lakes from Newfoundland to Winnipeg, and southward to Virginia, southern

Illinois, southern Missouri, and Arkansas.

Black ash fills many important places in the country’s wood-using

industries, but the total quantity is not large. In 1910 Michigan

manufacturers reported the annual quantity in that state at 9,110,432

feet, and in Illinois the total was 9,936,000 feet. The uses for the

wood in Michigan may be regarded as typical of the whole country. The

reported uses were, auto seats, baskets, boat finish, butter tubs, candy

pails, carriage seats, crating, church pews, fish nets, office fixtures,

flooring, furniture, ice chests, interior finish, jelly buckets, kitchen

cabinets, lard tubs, piano frames, putty kegs, racked hoops, spice kegs,

tin plate boxes, veneer, washboards, and woven splint boxes.

Black ash burls are characteristic excrescences on the trunk. They begin

as small lumps or knobs under the bark, and never cease growing while

the tree lives. They may reach the dimensions of wash tubs, but most do

not exceed the size of a gallon measure. The grain of the wood is

exceedingly distorted and involved. The burls are sliced or sawed in

veneers which are much prized by cabinet makers. Early New Englanders

made bowls of them, which seldom checked or split during generations of

service. The burls are believed to be due to adventitious buds; that is,

buds which originate deep in the wood, but are never able to force their

way through the bark. The internal structure of the ash burl indicates

that the buried bud grows, branches, and sends shoots in various

directions, but all of them are hopelessly enmeshed in the wood

substance, and never are able to free themselves and burst through the

bark. A constantly enlarging excrescence is the result.

BLUE ASH (_Fraxinus quadrangulata_) is named from a blue dye procured

from the inner bark. The botanical name relates to the square shape of

the young twigs, particularly the twigs of young trees, and was given by

A. F. Michaux who found the species growing in the South. It reaches its

best development on the lower Wabash river in Indiana and Illinois and

on the Big Smoky mountains in Tennessee. Its northern limit reaches

southern Michigan, its western is in Missouri. It is not abundant, if

found at all, east of the Appalachian mountains. Trees may reach a

height of 100 feet and a diameter of three, but about seventy is the

average height, with a diameter of two feet or less. The leaves resemble

those of black ash in form, but the foliage when seen in mass is

yellow-green instead of dark green like that of black ash. The seeds

look like those of black ash. The tree bears perfect flowers, and in

that respect differs from most other species of ash.

The wood is heavier than that of any other member of the ash group,

except Texas ash. It weighs about the same as white oak, which is six

pounds per cubic foot more than white ash weighs. In general appearance

the wood resembles white ash, but it is usually considered stronger and

more springy. The trunks of young trees are largely or entirely sapwood.

Sometimes no heartwood is formed until an age of seventy or eighty

years is reached. Many manufacturers of ash tool handles prefer this

species to any other ash, because of its thick, white sapwood. It is

often made into handles for hoes, rakes, shovels, pitchforks, spades,

and snaths for scythes. Makers of vehicles draw liberally upon this wood

within its range, as do furniture makers and the manufacturers of

flooring. It is regarded as harder than white ash, and consequently

better flooring material.

LEATHERLEAF ASH (_Fraxinus velutina_) changes its velvety leaves to

a leathery condition, hence the conflict in the meanings of its two

names. _Velutina_ means velvet-like. The compound leaves are seldom

six inches long, often not three, and they are made up of from three

to nine leaflets. The small seeds are equipped with wings. The tree

is small and would be without any commercial importance except that

it grows in an arid region where any wood is welcome. It is made

into ax, hammer, and pick handles, and wagon makers are often glad

to get it. It is found among the mountains and canyons of western

Texas, in New Mexico, Arizona, southern Nevada, and southeastern

California, near the shores of Owen’s lake. The largest trees are

scarcely forty feet high and eight inches in diameter. The wood is

not hard or strong, and is of slow growth. The largest trunks are

apt to be hollow. Sapwood is comparatively thick.

BERLANDIER ASH (_Fraxinus berlandieriana_) may not be entitled to a

place among native species, of the United States. Some suppose it

was introduced from Mexico by early Spanish settlers in western

Texas. It now grows wild there along Nueces and Blanco rivers where

specimens thirty feet high and a foot in diameter are found.

Southward in Mexico it is a popular street tree, and trunks reach

six or eight feet in diameter. The wood is soft and is used only

locally and in very small quantities.

[Illustration]

OREGON ASH

[Illustration: OREGON ASH]

OREGON ASH

(_Fraxinus Oregona_)

This tree is unusual in that it has only one common name, and that is a

translation of its botanical name which was given it by Nuttall who

visited the Pacific coast several years before the discovery of gold.

The moist bottom lands of southwestern Oregon are best suited to its

growth, and here the best individuals and most abundant stands are

found. Moist soil and climate are essential to proper development of

this tree, and in such environment it is found from Puget Sound

southward along the coast to San Francisco. A little further from the

coast it grows along the foothills of the Sierra Nevada mountains, to

the low mountains in San Diego and San Bernardino counties, California,

in the southern extension of its range occupying a rather dry region.

The trunk grows to a height of eighty or 100 feet, and is often three

feet in diameter. It is covered with a gray-brown bark, exfoliating in

flaky scales. The leaves are from five to fourteen inches long, and have

five or seven firm, light-green leaflets, finely toothed and bluntly

pointed. The flowers appear in April and May and are in compact

panicles; the fruit in clusters, broadly winged and round pointed, and

from one to two inches long.

The scarcity of good hardwoods on the Pacific coast gives this ash more

importance than it otherwise would have, and the importance which it

possesses has been frequently overstated. It is not abundant of form and

size fitting it for lumber. It has long been cut in small quantities,

but never in large. The census returns for 1910 show that less than

400,000 feet per year are reported in its entire range. Three-fourths of

this is sawed in Oregon, the remainder in Washington. Though the species

has a range of 800 miles north and south through California, no sawmill

reported a foot of it. However, it is probable that census returns fail

to do this wood full justice; for it is well known that considerable

quantities are manufactured into articles without passing through

sawmills. Chief among such commodities is slack cooperage. Butter tubs

of Oregon ash are common. Much goes to wagon shops, and some of it

without aid of sawmills.

Little or none of this wood is shipped outside its range, and its use is

local. Boat builders work it into finish for cabins and upper parts, and

some serves as ribs. It is often seen as handles for picks, shovels,

spades, pitchforks, and rakes. A little finds place, combined with other

woods, in office and store fixtures. Its grain resembles that of white

ash. It is not as heavy, and it is not believed to be as strong. It is

hard, brittle, brown in color, with thick, lighter-colored sapwood.

Furniture makers list it as shop material, and such is its largest

reported use in Washington. A moderate amount is made into saddletrees

and stirrups, and much is used as fuel.

Oregon ash has been planted for shade and ornament in both this country

and Europe. It grows rapidly and develops a symmetrical crown. The habit

it has of coming into leaf late in the spring and throwing its foliage

down early in autumn is held by some as a serious objection to it as an

ornamental tree; but it has compensating habits. It is remarkably free

from disease, and, though leaves come late and go early, while its

foliage is on, it is healthy and vigorous. Reproduction is satisfactory

in the tree’s wild state, and there is no danger that the species will

disappear. No movement has yet been made to plant this ash for

commercial timber growing.

GREEN ASH (_Fraxinus lanceolata_) has been given that name on account of

the bright color of its foliage. It has other names, however, which

indicate that its greenness is not always preëminently prominent. In

Iowa and Arkansas they call it blue ash; in Kansas and Nebraska white

ash; in some regions it is known as water ash, and elsewhere swamp ash.

Some botanists do not regard it as a separate species but call it a

variety of red ash, but the consensus of opinion is that it is a

distinct species, though there appear to be connecting forms grading

from red ash into green ash. Certain it is that the two are distinct

enough in certain parts of the country. The range of green ash is more

extensive than that of any other ash in this country. Beginning in

Vermont it passes southward to Florida; northwestward to the

Saskatchewan river several hundred miles north of the international

boundary line; along the base of the Rocky Mountains and over the ranges

to Arizona, and through Texas. This includes more than half of the area

of the United States. Notwithstanding a range so extensive, the total

quantity of green ash timber in the country is not large. No pure

forests or extensive stands exist. Trees are widely dispersed, and when

lumbermen cut them, the wood is sold as some other, usually as white

ash. The wood has the general characters of red ash. It weighs about

forty-four pounds per cubic foot of dry wood; is moderately strong,

fairly stiff and elastic, and, like other species of ash, it is not

durable in contact with the soil.

Green ash is more planted than any other in the cold and dry regions of

the West and Northwest. It is a prairie tree and is found along highways

and in door yards from Kansas northward into British America. It stands

drought better than any other ash, and resists cold fully as well, and

yet it endures the warm weather and the rains of the South and

flourishes there. It is not a large tree, but of sufficient size for use

as furniture, finish, and vehicle making. It is seldom listed in

statistics of woods which go to sawmills, yet it is known that a good

many logs find their way to mills, while wagon makers and slack coopers

employ it in producing their commodities. The tree is an abundant

seeder, and the seeds continue to fall during most of the winter.

RED ASH (_Fraxinus pennsylvanica_) is neither a large tree nor very

abundant, yet it has a wide range and is put to use wherever

lumbermen find it convenient. The lumber generally passes in the

market as white ash, and for most purposes it is as good, but is

rated lower than that wood in elasticity. It is called brown ash in

Maine, black ash in New Jersey, river ash in Rhode Island. The last

name is bestowed because the tree prefers moist land near rivers and

ponds, and largest specimens are found in such situations, where it

is often an associate of black ash and is frequently mistaken for

it, though it should not be difficult to tell the species apart. A

slight reddish tinge sometimes shows on the outer bark; the inner

layer of bark is reddish; the small twigs and the under sides of

leaves are clothed with hairs which sometimes suggest redness; and

the heartwood is reddish-brown. Persons who speak of the tree as red

ash probably have one or more of those characteristics in mind. As a

tree it has no striking peculiarities. Its usual height is forty or

sixty feet; its diameter from fifteen to twenty inches; its compound

leaves ten or twelve inches long, with seven or nine leaflets; its

seeds one or two inches in length, narrow, and sharply pointed, with

slender, graceful wing.

The range of red ash is from New Brunswick to Dakota, and from

Florida to Alabama, with all of the included region of a million

square miles. It attains its best development in the north Atlantic

states, while it is usually inferior west of the Alleghany

mountains. It develops a broad crown in open ground, but even there

its lower limbs die and drop, while in forests the trunk grows tall

and the crown is reduced. It is planted for shade and ornament, but

it seems to have no superiority over white ash for that purpose.

Some of the Michigan manufacturers list red ash separately in their

factories, and apparently this is not done elsewhere in the country.

About three-quarters of a million feet a year are used in that

state, and since uses there are doubtless typical of uses in the

country generally, the list possesses importance: Automobile frames,

boxes, butter tubs, crates, eveners, flooring, furniture, interior

finish, neck yokes, singletrees, wagon poles. Farther east in early

times red ash was occasionally split for fence rails, but that use

is important now only as history.

American Forest Trees · 第 29 / 52 段