Chapter IX

THE BUTTONWOOD, THE TUPELO, AND THE MULBERRIES

Families Platanaceæ, Cornaceæ, and Moracæ

There is but one genus in the family _Platanaceæ_, and but one species

in the genus found growing in the Northeastern States, the buttonwood,

or sycamore.

[Sidenote: Buttonwood, Sycamore, or Plane Tree

_Platanus occidentalis_]

_A large tree, 80 to 100 feet high, with an irregular, picturesque

outline. The bark breaks off in thin, brittle plates at the base of

the trunk, and higher up it is smooth, an olive green color, and

covered with white blotches. The buds are subpetiolar,—that is, they

are covered over by the base of the leafstalk through the summer,

and concealed entirely until the leaf drops off. The leaf-scar is in

the shape of a ring around the bud, with prominent bundle-scars; the

arrangement of the leaf-scars is alternate. Stipule scars are found on

the stems in some places. The buds are conical, smooth, and brown, and

are covered by one scale. The fruit hangs on the tree all winter,—a

large, dry ball made up of hundreds of seeds._

Like everything which has a definite individuality, the buttonwood is

a tree which people either like or dislike strongly. It is certainly

picturesque, and its subpetiolar buds alone make it unusually

interesting, whether one admires it or not from an æsthetic point of

view. These buds are entirely concealed through the summer by the

hollow bases of the leafstalks which fit over the buds like candle

extinguishers, and leave scars in circles after they have fallen.

Its bark has little expansive power, the tissue is rigid and cannot

stretch with the growing power from within, and it splits and is thrown

off easily. In connection with this, Dr. Holmes says in “The Autocrat

of the Breakfast-Table”:—

[Illustration: BUTTONWOOD

_Platanus occidentalis_

Page 118

]

[Illustration: TRUNK OF A BUTTONWOOD

Page 119

]

“The buttonwood throws off its bark in large flakes, which one may find

lying at its foot, pushed out, and at last pushed off, by that tranquil

movement from beneath, which is too slow to be seen, but too powerful

to be arrested. One finds them always, but one rarely sees them fall.

So it is our youth drops from us—scales off, sapless and lifeless, and

lays bare the tender and immature fresh growth of old age.”

Bryant says in his poem, “To the Green River”:—

“Clear are its depths where its eddies play,

And dimples deepen and whirl away,

And the plane tree’s speckled arms o’ershoot

The swifter current that mines its root.”

Gray calls the buttonwood our largest tree, and Emerson alludes to it

as “the largest, grandest, and loftiest deciduous tree in America;”

while Gilpin says that “no tree forms a more pleasing shade than the

occidental plane.”

The wood takes a good polish and is used for making furniture, ox

yokes, and for the interior finish of houses.

The generic name, _Platanus_, comes from the Greek word for broad,

and has reference to the wide-spreading leaves and branches of the

tree. The specific name, _occidentalis_, was given to the sycamore as

distinctive from _Platanus orientalis_, the oriental plane tree of

Europe. The oriental plane is planted occasionally in this country, and

may be distinguished from our native species by its broader head and by

the fruit, which frequently hangs in clusters instead of singly on the

tree.

The _Cornaceæ_ or dogwood family contains two New England genera. Among

many species of shrubs, two trees deserve especial notice, the tupelo

and the flowering dogwood.

[Sidenote: Tupelo, Pepperidge, Sour Gum Tree

_Nyssa sylvatica_]

_A medium-sized tree, with horizontal branches and often with an

excurrent trunk. Dark gray furrowed bark. Grayish brown twigs, with

alternate ridged leaf-scars and three bundle-scars at the top of the

leaf-scar. Small, brown buds, with overlapping, hairy scales. The fruit

is a small, bluish black drupe, ripe in the autumn._

The tupelo at all seasons is a striking tree, and is easily

distinguished even at a distance by its flat, rigid branches, growing

in horizontal layers from the main trunk. It varies much in shape,

according to its surroundings in youth. When it has grown up among

other trees in the woods it is erect and tall, and when it has stood by

itself in open ground it is low and broad, and almost always carries

its main trunk well into the top of the tree.

The wood is heavy, tough, and hard to work, and the fibres intertwine

so closely that it is very difficult to split. It is used in making the

hubs of wheels and ox yokes.

[Illustration: TUPELO

_Nyssa sylvatica_

Page 120

]

The generic name, _Nyssa_, is the Greek name of a nymph, and was

given to the tupelo on account of its habit of growing in wet places,

on the borders of ponds, and in low, moist woods. The specific name is

frequently given to plants and trees, and comes from the Latin word

which means belonging to the woods.

It is found from Maine to Florida and westward, and stands the winds

from the sea well when it grows along the coast, apparently losing

little of its vigor.

[Sidenote: Flowering Cornel, Flowering Dogwood

_Cornus florida_]

_A small tree or shrub, 12 to 40 feet high, with a dark, rough bark.

The recent shoots are gray and covered with down. The leaf-scars

are small and opposite each other on the stem. The flower buds are

conspicuous._

The flowering cornel can be distinguished by its flower buds alone

in winter, if by nothing else. They are small and round with long

curving tips, and in shape they look something like the paper torpedoes

children play with on the Fourth of July. This is the only native

tree in our climate, besides the maple and ash, which has opposite

leaf-scars.

The confusion existing in some minds between the flowering dogwood of

the woods and the poison dogwood of the swamps casts an undeserved

shadow over the name of the former. If the poison dogwood were always

called poison sumac and the _Cornus florida_, flowering cornel, this

unfortunate confusion would soon end.

The wood is strong, hard, and close-grained, and takes polish

exceedingly well. It is used in turnery, for the handles of tools, and

occasionally for engravers’ blocks. The bark is bitter and is used as

an astringent and tonic, especially in the treatment of fevers. The

Indians made a scarlet dye from the bark of the roots.

The generic name comes from the Latin _cornus_, a horn, and refers to

the hardness of the wood, and the specific name, _florida_ (abounding

in blossoms), alludes to the remarkable white flowers of this cornel,

which open in June.

The flowering dogwood is found from Eastern Massachusetts to Central

Florida and westward, and grows under large trees in rich woods.

The _Moracæ_ are a small family with but one native representative in

the North, the red mulberry. The white mulberry from China has been so

widely cultivated and naturalized in the United States, that it is seen

more commonly than the native species.

[Illustration: RED MULBERRY

_Morus rubra_

Page 123

]

[Sidenote: Red Mulberry

_Morus rubra_]

_A small tree, 15 to 60 feet high. The bark is rough, with long

furrows. The twigs are a light greenish brown and the leaf-scars are

oval, hollow, and alternate in arrangement. The bundle-scars form a

closed chain around the leaf-scar. A milky juice comes if the stems are

cut on warm days in winter. Very smooth buds._

The red mulberry is not particularly attractive in winter. In open

situations its branches are wide spreading without being graceful, and

it is broadly erect in shape without being stately. It grows to be a

much larger tree in the South than it does in the North.

The wood is soft and light, but very durable, and it is used for fences

and cooperage, and in the South for boat-building. The fruit is edible,

with an agreeable acid flavor.

The generic name, _Morus_, is probably derived from the Celtic word

_mor_, meaning black, in reference to the color of the fruit. The

specific name, _rubra_, is given to this species because the mulberries

are dark red instead of white, like those of _Morus alba_.

The red mulberry is found growing wild in Western Massachusetts, south

to Florida and westward. It is frequently planted in gardens for its

fruit.

[Sidenote: White Mulberry

_Morus alba_]

_A small tree, with a rough bark, small, round brown buds, and small

projecting alternate leaf-scars with clearly defined bundle-scars. The

buds are smaller and more rounded than those of the red mulberry. It

is easily distinguished from the red mulberry by its more numerous and

slender shoots._

Professor Charles S. Sargent says that no other tree furnishes

employment, directly and indirectly, to so large a number of the human

race, or has been so carefully studied from the cultural point of view,

and no other tree has given rise to such a voluminous literature as the

white mulberry.

[Illustration: WHITE MULBERRY

_Morus alba_

Page 124

]

It was introduced here from China about 1830, and it has been widely

cultivated and naturalized throughout the United States. The Chinese

were the first to cultivate the mulberry for feeding silkworms, and

they are said to have discovered the art of making silk 2700 years

B. C. According to Loudon the discovery is due to the keen powers of

observation of the Empress Si-ling-chi, who watched the labors of

silkworms on wild mulberry trees, and who first applied their silk

to use. It is interesting to associate the making of silk with an

empress who loved nature and used her eyes two thousand years and

more B. C. From China the art passed into Persia, India, Arabia, and

finally (350 B. C.) into Greece. In 1440 A. D. the white mulberry was

introduced into upper Italy, and during the reign of Charles VII. the

first white mulberry was planted in France. In 1609 the silkworm was

introduced into Great Britain by James I., and at the same time he sent

over mulberry trees and silkworms to America, and tried to induce the

colonists in Virginia to cultivate silkworms instead of raising tobacco.

The wood has been used for making wine casks in Europe, and is highly

valued on account of the supposed violet flavor it gives to white

wines. The bark is used for making bast for mats, and linen also has

been made out of it. The fruit of the white mulberry is insipid and

tasteless.

Studies of trees in winter · 第 18 / 30 章