Quercus stellata, Wang.

Q. obtusiloba, Michx. Q. minor, Sarg.

Post Oak. Box White Oak.

Habitat and Range.

In New England, mostly in sterile soil near the sea-coast; Massachusetts,—southern Cape Cod from Falmouth to Brewster, the most northern station reported, occasional; the islands of Naushon, Martha's Vineyard where it is rather common, and Nantucket where it is rare; Rhode Island,—along the shore of the northern arm of Wickford harbor (L. W. Russell); Connecticut,—occasional along the shores of Long Island sound west of New Haven.

Habit.—Farther south, a tree of the first magnitude, reaching a height of 100 feet, with a trunk diameter of 4 feet; in southern New England occasionally attaining in woodlands a height of 50-60 feet; at its northern limit in Massachusetts, usually 10 to 35 feet in height, with a diameter at the ground of 6-12 inches. The trunk throws out stout, tough, and often conspicuously crooked branches, the lower horizontal or declining, forming a disproportionately large head, with dark green, dense foliage. Near the shore the limbs often grow very low, stretching along the ground as if from an underground stem.

Bark.—Resembling that of the white oak, but rather a darker gray, rougher and firmer; upon old trunks furrowed and cut into oblongs; small limbs brownish-gray, rough-dotted; season's shoots densely tawny-tomentose.

Winter Buds and Leaves.—Buds small, rounded or conical, brownish, scales minutely pubescent or scurfy. Leaves simple, alternate, 3-8 inches long, two-thirds as wide, thickish, yellowish-green and tomentose upon both sides when young, becoming a deep, somewhat glossy green above, lighter beneath, both sides still somewhat scurfy; general outline of leaf and of lobes, and number and shape of the latter, extremely variable; type-form 5-lobed, all the lobes rounded, the three upper lobes much larger, more or less subdivided, often squarish, the two lower tapering to an acute, rounded, or truncate base; sinuses deep, variable, often at right angles to the midrib; leafstalk short, tomentose; stipules linear, pubescent, occasionally persistent till midsummer. The leaves are often arranged at the tips of the branches in star-shaped clusters, giving rise to the specific name stellata.

Inflorescence.—May. Sterile catkins 1-3 inches long, connecting thread woolly; calyx 4-8 parted, lobes acute, densely pubescent, yellow; stamens 4-8, anthers with scattered hairs: pistillate flowers single or in clusters of 2, 3, or more, sessile or on a short stem; stigma red.

Fruit.—Maturing the first season, single and sessile, or nearly so, or in clusters of 2, 3, or more, on short footstalks: cup top-shaped or cup-shaped, ⅓-½ the length of the acorn, about ¾ inch wide, thin; scales smooth or sometimes hairy along the top, acutish or roundish, slightly thickened at base: acorn ½-1 inch long, sweet.

Horticultural Value.—Hardy in New England; prefers a good, well-drained, open soil; quite as slow-growing as the white oak; seldom found in nurseries and difficult to transplant. Propagated from the seed.

Quercus macrocarpa, Michx.

Bur Oak. Over-cup Oak. Mossy-cup Oak.

Habitat and Range.—Deep, rich soil; river valleys.

Maine,—known only in the valleys of the middle Penobscot (Orono) and the Kennebec (Winslow, Waterville); Vermont,—lowlands about Lake Champlain, especially in Addison county, not common; Massachusetts,—valley of the Ware river (Worcester county), Stockbridge and towns south along the Housatonic river (Berkshire county); Rhode Island,—no station reported; Connecticut,—probably introduced in central and eastern sections, possibly native near the northern border.

Habit.—A medium-sized tree, 40-60 feet high, with a trunk diameter of 1-3 feet; attaining great size in the Ohio and Mississippi river basins; trunk erect, branches often changing direction, ascending, save the lowest, which are often nearly horizontal; branchlets numerous, on the lowest branches often declined or drooping; head wide-spreading, rounded near the center, very rough in aspect; distinguished in summer by the luxuriance of the dark-green foliage and in autumn by the size of its acorns.

Bark.—Bark of trunk and branches ash-gray, but darker than that of the white oak, separating on old trees into rather firm, longitudinal ridges; bark of branches sometimes developed into conspicuous corky, wing-like layers; season's shoots yellowish-brown, minutely hairy, with numerous small, roundish, raised dots.

Winter Buds and Leaves.—Buds brown, 1/16 to ⅛ inch long, conical, scattered along the shoots and clustered at the enlarged tips. Leaves simple, alternate, 6-9 inches long, 3-4 inches broad, smooth and dark green above, lighter and downy beneath; outline obovate to oblong, varying from irregularly and deeply sinuate-lobed, especially near the center, to nearly entire, base wedge-shaped; stalk short; stipules linear, pubescent.

Inflorescence.—May. Sterile catkins 3-5 inches long; calyx mostly 5-parted, yellowish-green; divisions linear-oblong, more or less persistent; stamens 10; anthers yellow, glabrous: pistillate flowers sessile or short-stemmed; scales reddish; stigma red.

Fruit.—Maturing the first season; extremely variable; sessile or short-stemmed: cup top-shaped to hemispherical, 3/4-2 inches in diameter, with thick, close, pointed scales, the upper row often terminating in a profuse or sparing hairy or leafy fringe: acorn ovoid, often very large, sometimes sunk deeply and occasionally entirely in the cup.

Horticultural Value.—Hardy in New England; in general appearance resembling the swamp white oak, but better adapted to upland; grows rather slowly in any good, well-drained soil; difficult to transplant; seldom disfigured by insects or disease; occasionally grown in nurseries. Propagated from seed. A narrower-leafed form with small acorns (var. olivæformis) is occasionally offered.

Maine,—York county; New Hampshire,—Merrimac valley as far as the mouth of the Souhegan, and probably throughout Rockingham county; Vermont,—low grounds about Lake Champlain; Massachusetts,—frequent in the western and central sections, common eastward; Rhode Island and Connecticut,—common.

Habit.—A medium-sized tree, 40-60 feet high, with a trunk diameter of 2-3 feet; attaining southward of the Great Lakes and in the Ohio basin much greater dimensions; roughest of all the oaks, except the bur oak, in general aspect; trunk erect, continuous, in young trees often beset at point of branching with down-growing, scraggly branchlets, surmounted by a rather regular pyramidal head, the lower branches horizontal or declining, often descending to the ground, with a short, stiff, abundant, and bushy spray; smaller twigs ridgy, widening beneath buds; foliage a dark shining green; heads of large trees less regular, rather open, with a general resemblance to the head of the white oak, but narrower at the base, with less contorted limbs.

Bark.—Bark of trunk and larger branches thick, dark grayish-brown, longitudinally striate, with flaky scales; bark of young stems, branches, and branchlets darker, separating in loose scales which curl back, giving the tree its shaggy aspect; season's shoots yellowish-green.

Winter Buds and Leaves.—Buds brown, roundish-ovate, obtuse. Leaves simple, alternate, 3-8 inches long, 2-4 wide, downy on both sides when unfolding, at maturity thick and firm, smooth and dark shining green above, slightly to conspicuously whitish-downy beneath, in autumn brownish-yellow; obovate, coarsely and deeply crenate or obtusely shallow-lobed, when opening sometimes pointed and tapering to a wedge-shaped base, often constricted near the center; leafstalk short; stipules linear, soon falling.

Inflorescence.—May. Sterile catkins 2-3 inches long, thread hairy; calyx deeply 3-7-parted, pale yellow, hairy; stamens 5-8; anthers yellow, glabrous: pistillate flowers tomentose, on rather long, hairy peduncles; stigmas red.

Fruit.—Variable, on stems 1-3 inches long, maturing the first season, single or frequently in twos: cup rounded, rather thin, deep, rough to mossy, often with fringed margins: acorn about 1 inch long, oblong-ovoid, more or less tapering: meat sweet, edible.

Horticultural Value.—Hardy throughout New England; grows in any good soil, wet or dry, but prefers a position on the edge of moist or boggy land, where its roots can find a constant supply of water; growth fairly rapid; seldom affected by insects or disease; occasionally offered by nurserymen and rather less difficult to transplant than most of the oaks. Its sturdy, rugged habit and rich dark green foliage make it a valuable tree for ornamental plantations or even for streets.

Maine,—Saco river and Mt. Agamenticus, near the southern coast (York county); New Hampshire,—belts or patches in the eastern part of the state and along the southern border, Hinsdale, Winchester, Brookline, Manchester, Hudson; Vermont,—western part of the state throughout, not common; abundant at Smoke mountain at an altitude of 1300 feet, and along the western flank of the Green mountains, at least in Addison county; Massachusetts,—eastern sections, Sterling, Lancaster, Russell, Middleboro, rare in Medford and Sudbury, frequent on the Blue hills; Rhode Island,—locally common; Connecticut,—common.

Habit.—A small or medium-sized tree, 25-50 feet high, with a trunk diameter of 1-2½ feet, assuming noble proportions southward, often reaching a height of 75-100 feet and trunk diameter of 5-6 feet; trunk tall, straight, continuous to the top of the tree, scarcely tapering to the point of ramification, surmounted by a spacious, open head.

Bark.—Bark of trunk and large branches deep gray to dark brown or blackish, in firm, broad, continuous ridges, with small, close surface scales; bark of young trees and of branchlets smooth, brown, and more or less lustrous; season's shoots light brown.

Winter Buds and Leaves.—Buds ovate to cylindrical, mostly acute, brownish. Leaves simple, alternate, 5-8 inches long, 2-5 inches wide, dark green and smooth above, paler and more or less downy beneath; outline obovate to oval, undulate-crenate; apex blunt-pointed; base wedge-shaped, obtuse or slightly rounded, often unequal-sided; veins straight, parallel, prominent beneath; leafstalk ½-1½ inches long; stipules linear, soon falling.

Inflorescence.—May. Sterile catkins 2-3 inches long; calyx 5-9-parted, yellow, hairy; divisions oblong, densely pubescent; stamens 5-9; anthers yellow, glabrous: pistillate flowers with hairy scales and dark red stigmas.

Fruit.—Seldom abundant, maturing the first season, variable in size, on stems usually equal to or shorter than the leaf-stems: cup thin, hemispheric or somewhat top-shaped, deep; scales small, knobby-thickened at the base: acorns ¾-1½ inches long, ovoid-conical, sweet.

Horticultural Value.—Hardy throughout New England; prefers a light gravelly or stony soil; rapid-growing and free from disease; more easily and safely transplanted than most oaks; occasionally offered by nurserymen, who propagate it from the seed. Its vigorous, clean habit of growth and handsome foliage should give it a place in landscape gardening and street use.

Winter Buds and Leaves.—Buds ovate, acute to obtuse, brownish. Leaves simple, alternate; in the typical form as recognized by Muhlenburg, 3-6 inches long, 1½-2 inches wide, glossy dark green above, pale and minutely downy beneath; outline lanceolate or lanceolate-oblong, with rather equal, coarse, sharp, and often inflexed teeth; apex acuminate; base wedge-shaped or acute; stipules soon falling. There is also a form of the species in which the leaves are much larger, 5-7 inches in length and 3-5 inches in width, broadly ovate or obovate, with rounded teeth; distinguishable from Q. Prinus only by the bark and fruit.

Inflorescence.—May. Appearing with the leaves; sterile catkins 2-4 inches long; calyx yellow, hairy, segments 5-8, ciliate; stamens 5-8, anthers yellow: pistillate flowers sessile or on short spikes; stigma red.

Fruit.—Maturing the first season, sessile or short-peduncled: cup covering about half the nut, thin, shallow, with small, rarely much thickened scales: acorn ovoid or globose, about 3/4 inch long.

Horticultural Value.—Hardy in New England; grows in all good dry or moist soils, in open or partly shaded situations; maintains a nearly uniform rate of growth till maturity, and is not seriously affected by insects. It forms a fine individual tree and is useful in forest plantations. Propagated from seed.

More or less common throughout the states east of the Mississippi; westward apparently grading into Q. Muhlenbergii, within the limits of New England mostly a low shrub, rarely assuming a tree-like habit. The leaves vary from rather narrow-elliptical to broadly obovate, are rather regularly and coarsely toothed, bright green and often lustrous on the upper surface.

Quercus rubra, L.

Red Oak.

Habitat and Range.—Growing impartially in a great variety of soils, but not on wet lands.

Maine,—common, at least south of the central portions; New Hampshire,—extending into Coos county, far north of the White mountains; Vermont, Massachusetts, Rhode Island, and Connecticut,—common; probably in most parts of New England the most common of the genus; found higher up the slopes of mountains than the white oak.

Habit.—The largest of the New England oaks, 50-85 feet high, with a diameter of 2-6 feet above the swell of the roots; occasionally attaining greater dimensions; trunk usually continuous to the top of the tree, often heavily buttressed; point of branching higher than in the white oak; branches large, less contorted, and rising at a sharper angle, the lower sometimes horizontal; branchlets rather slender; head extremely variable, in old trees with ample space for growth, open, well-proportioned, and imposing; sometimes oblong in outline, wider near the top, and sometimes symmetrically rounded, not so broad, however, as the head of the white oak; conspicuous in summer by its bright green, abundant foliage, which turns to dull purplish-red in autumn.

Bark.—Bark of trunk and lower parts of branches in old trees dark gray, firmly, coarsely, and rather regularly ridged, smooth elsewhere; in young trees greenish mottled gray, smooth throughout; season's shoots at first green, taking a reddish tinge in autumn, marked with pale, scattered dots.

Winter Buds and Leaves.—Buds ovate, conical, sharp-pointed. Leaves simple, alternate, 4-8 inches long, 3-5 inches broad, bright green above, paler beneath, dull brown in autumn; outline oval or obovate, sometimes scarcely distinguishable by the character of its lobing from Q. tinctoria; in the typical form, lobes broadly triangular or oblong, with parallel sides bristle-pointed; leafstalks short; stipules linear, soon falling.

Inflorescence.—Earliest of the oaks, appearing in late April or early May, when the leaves are half-grown; sterile catkins 3-5 inches long; calyx mostly 4-lobed; lobes rounded; stamens mostly 4; anthers yellow: pistillate flowers short-stemmed; calyx lobes mostly 3 or 4; stigmas long, spreading.

Fruit.—Maturing in the second year, single or in pairs, sessile or short-stalked: cup sometimes turbinate, usually saucer-shaped with a flat or rounded base, often contracted at the opening and surmounted by a kind of border; scales closely imbricated, reddish-brown, more or less downy, somewhat glossy, triangular-acute to obtuse, pubescent: acorn nearly cylindrical or ovoid, tapering to a broad, rounded top.

Horticultural Value.—Hardy throughout New England; grows in all well-drained soils, but prefers a rich, moist loam; more readily obtainable than most of our oaks; in common with other trees of the genus, nursery trees must be transplanted frequently to be moved with safety; grows rapidly and is fairly free from disfiguring insects; the oak-pruner occasionally lops off its twigs. When once established, it grows as rapidly as the sugar maple, and is worthy of much more extended use in street and landscape plantations. Propagated from the seed.

Quercus coccinea, Wang.

Scarlet Oak.

Habitat and Range.—Most common in dry soil.

Maine,—valley of the Androscoggin, southward; New Hampshire and Vermont,—not authoritatively reported by recent observers; Massachusetts,—more common in the eastern than western sections, sometimes covering considerable areas; Rhode Island and Connecticut,—common.

Habit.—A medium-sized tree, 30-50 feet high and 1-3 feet in trunk diameter; attaining greater dimensions southward; trunk straight and tapering, branches regular, long, comparatively slender, not contorted, the lower nearly horizontal, often declined at the ends; branchlets slender; head open, narrow-oblong or rounded, graceful; foliage deeply cut, shining green in summer and flaming scarlet in autumn; the most brilliant and most elegant of the New England oaks.

Bark.—Trunk in old trees dark gray, roughly and firmly ridged; inner bark red; young trees and branches smoothish, often marked with dull red seams and more or less mottled with gray.

Winter Buds and Leaves.—Buds small, reddish-brown, ovate to oval, acutish, partially hidden by enlarged base of petiole. Leaves simple, alternate, extremely variable, more commonly 3-6 inches long, two-thirds as wide, bright green and shining above, paler beneath, smooth on both sides but often with a tufted pubescence on the axils beneath, turning scarlet in autumn, deeply lobed, the rounded sinuses sometimes reaching nearly to the midrib; lobes 5-9, rather slender and set at varying angles, sparingly toothed and bristly tipped; apex acute; base truncate to acute; leafstalk 1-1½ inches long, slender, swollen at base.

Inflorescence.—Early in May. Appearing when the leaves are half grown; sterile catkins 2-4 inches long; calyx most commonly 4-parted; pubescent; stamens commonly 4, exserted; anthers yellow, glabrous: pistillate flowers red; stigmas long, spreading, reflexed.

Fruit.—Maturing in the autumn of the second year, single or in twos or threes, sessile or on rather short footstalks: cup top-shaped or cup-shaped, about half the length of the acorn, occasionally nearly enclosing it, smooth, more or less polished, thin-edged; scales closely appressed, firm, elongated, triangular, sides sometimes rounded, homogeneous in the same plant: acorn ½-¾ inch long, variable in shape, oftenest oval to oblong: kernel white within; less bitter than kernel of the black oak.

Horticultural Value.—Hardy throughout New England; grows in any light, well-drained soil, but prefers a fertile loam. Occasionally offered by nurserymen, but as it is disposed to make unsymmetrical young trees it is not grown in quantity, and it is not desirable for streets. Its rapid growth, hardiness, beauty of summer foliage, and its brilliant colors in autumn make it desirable in ornamental plantations. Propagated from the seed.

Maine,—York county; New Hampshire,—valley of the lower Merrimac and eastward, absent on the highlands, reappearing within three or four miles of the Connecticut, ceasing at North Charlestown; Vermont,—western and southeastern sections; Massachusetts,—abundant eastward; Rhode Island and Connecticut,—frequent.

Habit.—One of our largest oaks, 50-75 feet high and 2-4 feet in diameter, exceptionally much larger, attaining its maximum in the Ohio and Mississippi basins; resembling Q. coccinea in the general disposition of its mostly stouter branches; head wide-spreading, rounded; trunk short; foliage deep shining green, turning yellowish or reddish brown in autumn.

Bark.—Bark of trunk dark gray or blackish, often lighter near the seashore, thick, usually rough near the ground even in young trees, in old trees deeply furrowed, separating into narrow, thick, and firmly adherent block-like strips; inner bark thick, yellow, and bitter; branches and branchlets a nearly uniform, mottled gray; season's shoots scurfy-pubescent.

Winter Buds and Leaves.—Buds ⅛-¼ inch long, bluntish to pointed, conspicuously clustered at ends of branches. Leaves simple, alternate, of two forms so distinct as to suggest different species, a (Plate XLV, 8) varying towards b (Plate XLV, 6), and b often scarcely distinguishable from the leaf of the scarlet oak; in both forms outline obovate to oval, lobes usually 7, densely woolly when opening, more or less pubescent or scurfy till midsummer or later, dark shining green above, lighter beneath, becoming brown or dull red in autumn.

Form a, sinuses shallow, lobes broad, rounded, mucronate.

Form b, sinuses deep, extending halfway to the midrib or farther, oblong or triangular, bristle-tipped.

Inflorescence.—Early in May. Appearing when the leaves are half grown; sterile catkins 2-5 inches long, with slender, pubescent threads; calyx usually 3-4-lobed; lobes ovate, acute to rounded, hairy-pubescent; stamens 3-7, commonly 4-5; anthers yellow: pistillate flowers reddish, pubescent, at first nearly sessile; stigmas 3, red, divergent, reflexed.

Fruit.—Maturing the second year; nearly sessile or on short footstalks: cup top-shaped to hemispherical; scales less firm than in Q. coccinea, tips papery and transversely rugulose, obtuse or rounded, or some of them acutish, often lacerate-edged, loose towards the thick and open edge of the cup: acorn small: kernel yellow within and bitter.

Horticultural Value.—Hardy throughout New England; grows in well-drained soils, but prefers a rich, moist loam; of vigorous and rapid growth when young, but as it soon begins to show dead branches and becomes unsightly, it is not a desirable tree to plant, and is rarely offered by nurserymen. Propagated from seed.

Note.—Apparently runs into Q. coccinea, from which it may be distinguished by its rougher and darker trunk, the yellow color and bitter taste of the inner bark, its somewhat larger and more pointed buds, the greater pubescence of its inflorescence, young shoots and leaves, the longer continuance of scurf or pubescence upon the leaves, the yellow or dull red shades of the autumn foliage, and by the yellow color and bitter taste of the nut.

Northern New England,—no station reported; Massachusetts,—Amherst (Stone, Bull. Torrey Club, IX, 57; J. E. Humphrey, Amherst Trees); Springfield, south to Connecticut, rare; Rhode Island,—southern portions, bordering the great Kingston swamp, and on the margin of the Pawcatuck river (L. W. Russell); Connecticut,—common along the sound, frequent northward, extending along the valley of the Connecticut river to the Massachusetts line.

Habit.—A medium-sized tree, 40-50 feet high, with trunk diameter of 1-2 feet, occasionally reaching a height of 60-70 feet (L. W. Russell), but attaining its maximum of 100 feet in height and upward in the basins of the Ohio and Mississippi rivers; trunk rather slender, often fringed with short, drooping branchlets, lower tier of branches short and mostly descending, the upper long, slender, and often beset with short, lateral shoots, which give rise to the common name; head graceful, open, rounded and symmetrical when young, in old age becoming more or less irregular; foliage delicate; bright shining green in autumn, often turning to a brilliant scarlet.

Bark.—Bark of trunk dark, furrowed and broken in old trees, in young trees grayish-brown, smoothish; branchlets shining, light brown.

Winter Buds and Leaves.—Buds short, conical, acute. Leaves simple, alternate, 3-5 inches long, bright green, smooth and shining above, duller beneath, with tufted hairs in the angles of the veins; outline broadly obovate to ovate; lobes divergent, triangular, toothed or entire, bristle-pointed; sinuses broad, rounded; leafstalk slender; stipules linear, soon falling.

Inflorescence.—May. Appearing when the leaves are half grown; sterile catkins 2-4 inches long; segments of calyx mostly 4 or 5, obtuse or rounded, somewhat lacerate; stamens mostly 4 or 5, anthers yellow, glabrous: pistillate flowers with broadly ovate scales; stigmas stout, red, reflexed.

Fruit.—Abundant, maturing the second season, short-stemmed: cup saucer-shaped, with firm, appressed scales, shallow: acorns ovoid to globose, about ½ inch long, often striate, breadth sometimes equal to entire length of fruit.

Horticultural Value.—Probably hardy throughout New England; grows in wet soils, but prefers a rich, moist loam; of rapid and uniform growth, readily and safely transplanted, and but little disfigured by insects; obtainable in leading nurseries. Propagated from the seed.

Bark.—Old trunks dark gray, with small, closely appressed scales; small trunks and branches grayish-brown, not furrowed or scaly; younger branches marked with pale yellow, raised dots; season's shoots yellowish-green, with a tawny, scurfy pubescence.

Winter Buds and Leaves.—Buds ⅛-¼ inch long, ovoid or conical, covered with imbricated, brownish, minutely ciliate scales. Leaves simple, alternate, 3-4 inches long and 2-3 inches broad; when unfolding reddish above and woolly on both sides, when mature yellowish-green and somewhat glossy above, smooth except on the midrib, rusty-white, and pubescent beneath; very variable in outline and in the number (3-7) and shape of lobes, sometimes entire, oftenest obovate with 5 bristle-tipped angular lobes, the two lower much smaller; base unequal, wedge-shaped, tip obtuse or rounded; leafstalk short; stipules linear, soon falling.

Inflorescence.—Early in May. Appearing when the leaves are half grown; sterile catkins 2-4 inches long; calyx pubescent, lobes oftenest 2-3, rounded; stamens 3-5; anthers red or yellow: pistillate flowers numerous; calyx lobes ovate, pointed, reddish, pubescent; stigmas 3, reddish, recurved, spreading.

Fruit.—Abundant, maturing in the autumn of the second year, clustered along the branchlets on stout, short stems: cup top-shaped or hemispherical: acorn about ½ inch long, varying greatly in shape, mostly ovoid or spherical, brown, often striped lengthwise.

Horticultural Value.—Hardy in New England; grows well in dry, gravelly, ledgy, or sandy soil, where few other trees thrive; useful in such situations where a low growth is required; but as it is not procurable in quantity from nurseries, it must be grown from the seed. The leaves are at times stripped off by caterpillars, but otherwise it is not seriously affected by insects or fungous diseases.

ULMACEÆ. ELM FAMILY.

4. The drooping elm differs from the type in the height of the arch and greater droop of the branches, which sometimes sweep the ground.

5. In the oak form the limbs are more or less tortuous and less arching, forming a wide-spreading, rounded head.

In all forms short, irregular, pendent branchlets are occasional along the trunks. The trees most noticeably feathered are usually of medium size, and have few large branches, the superfluous vitality manifesting itself in a copious fringe, which sometimes invests and obliterates the great pillars which support the masses of foliage. Conspicuous at all seasons of the year,—in spring when its brown buds are swollen to bursting, or when the myriads of flowers, insignificant singly, give in the sunlight an atmosphere of purplish-brown; when clothed with light, airy masses of deep green in summer or pale yellow in autumn, or in winter when the great trunk and mighty sweep of the arching branches distinguish it from all other trees. The roots lie near the surface and run a great distance.

Bark.—Dark gray, irregularly and broadly striate, rather firmly ridged, in very old trees sometimes partially detached in plates; branches ash-gray, smooth; branchlets reddish-brown; season's shoots often pubescent, light brown in late fall.

Winter Buds and Leaves.—Buds ovate, brown, flattened, obtuse to acute, smooth. Leaves simple, alternate, 2-5 inches long, 2-3 inches wide, dark green and roughish above, lighter and downy at first beneath; outline ovate or oval to obovate-oblong, sharply and usually doubly serrate; apex abruptly pointed; base half acute, half rounded, produced on one side, often slightly heart-shaped or obtuse; veins straight and prominent; leafstalk stout, short; stipules small, soon falling. Leaves drop in early autumn.

Inflorescence.—April. In loose lateral clusters along the preceding season's shoots; flowers brown or purplish, mostly perfect, with occasional sterile and fertile on the same tree; stems slender; calyx 7-9-lobed, hairy or smooth; stamens 7-9, filaments slender, anthers exserted, brownish-red; ovary flat, green, ciliate; styles 2.

Fruit.—Ripening in May, before the leaves are fully grown, a samara, ½ inch in diameter, oval or ovate, smooth on both sides, hairy on the edge, the notch in the margin closed or partially closed by the two incurved points.

Horticultural Value.—Hardy throughout New England; grows in any soil, but prefers a deep, rich loam; the ideal street tree with its high, overarching branches and moderate shade; grows rapidly, throws out few low branches, bears pruning well; now so seriously affected by numerous insect enemies that it is not planted as freely as heretofore; objectionable on the borders of gardens or mowing land, as the roots run along near the surface for a great distance. Very largely grown in nurseries, usually from seed, sometimes from small collected plants. Though so extremely variable in outline, there are no important horticultural forms in cultivation.