New England,—throughout.

Habit.—Shrub or small tree, 10-25 feet high, with a trunk diameter of 6-10 inches, reaching sometimes a height of 40 feet and trunk diameter of 18 inches; head rather wide-spreading, slender-branched, open; conspicuous in early spring, while other trees are yet naked, by its profuse display of loose spreading clusters of white flowers, and the delicate tints of the silky opening foliage.

Bark.—Trunk and large branches greenish-gray, smooth; branchlets purplish-brown, smooth.

Winter Buds and Leaves.—Buds small, oblong-conical, pointed. Leaves 2-3-½ inches long, about half as wide, slightly pubescent when young, dark bluish-green above at maturity, lighter beneath; outline varying from ovate to obovate, finely and sharply serrate; apex pointed or mucronate, often abruptly so; base somewhat heart-shaped or rounded; leafstalk about 1 inch long; stipules slender, silky, ciliate, soon falling.

Inflorescence.—April to May. Appearing with the leaves at the end of the branchlets in long, loose, spreading or drooping, nearly glabrous racemes; flowers large; calyx 5-cleft, campanulate, pubescent to nearly glabrous; segments lanceolate, acute, reflexed; petals 5, whole, narrow-oblong or oblong-spatulate, about 1 inch long, two to three times the length of the calyx; stamens numerous: ovary with style deeply 5-parted.

Fruit.—June to July. In drooping racemes, globose, passing through various colors to reddish, purplish, or black purple, long-stemmed, sweet and edible without decided flavor.

Horticultural Value.—Hardy throughout New England; grows in all soils and situations except in wet lands, but prefers deep, rich, moist loam; very irregular in its habit of growth, sometimes forming a shrub, at other times a slender, unsymmetrical tree, and again a symmetrical tree with well-defined trunk. Its beautiful flowers, clean growth, attractive fruit and autumn foliage make it a desirable plant in landscape plantations where it can be grouped with other trees. Occasionally in nurseries; procurable from collectors.

A small tree, 10-25 feet in height and 6-12 inches in trunk diameter; best distinguished by its thorns and leaves.

Thorns numerous, straight, long (2-4 inches), slender; leaves thick, smooth, dark green, shining on the upper surface, pale beneath, turning dark orange red in autumn; outline obovate-oblanceolate, serrate above, entire or nearly so near base; apex acute or rounded; base decidedly wedge-shaped shaped; leafstalks short.

Fruit globose or very slightly pear-shaped, remaining on the tree throughout the winter.

Hardy throughout southern New England; used frequently for a hedge plant.

Cratægus punctata, Jacq.

Thickets, hillsides, borders of forests.

Small tree, common in Vermont (Brainerd) and occasional in the other New England states.

Thorns 1-2 inches long, sometimes branched; leaves 1-2½ inches long, smooth on the upper surface, finally smooth and dull beneath; outline obovate, toothed or slightly lobed above, entire or nearly so beneath, short-pointed or somewhat obtuse at the apex, wedge-shaped at base; leafstalk slender, 1-2 inches long; calyx lobes linear, entire; fruit large, red or yellow.

Cratægus coccinea, L.

In view of the fact of great variation in the bark, leaves, inflorescence, and fruit of plants that have all passed in this country as C. coccinea, and in view of the further uncertainty as to the plant on which the species was originally founded, it seems "best to consider the specimen in the Linnæan herbarium as the type of C. coccinea which can be described as follows:

Cratægus mollis, Scheele.

Cratægus subvillosa, Schr. Cratægus coccinea, var. mollis, T. & G.

Thorn.

Habitat and Range.—Bordering on low lands and along streams.

Maine,—as far north as Mattawamkeag on the middle Penobscot, Dover on the Piscataquis, and Orono on the lower Penobscot; reported also from southern sections; Vermont,—Charlotte (Hosford); Massachusetts,—in the eastern part infrequent; no stations reported in the other New England states.

Habit.—Shrub or often a small tree, 20-30 feet high, with trunk 6-12 inches in diameter, often with numerous suckers; branches at 4-6 feet from the ground, at an acute angle with the stem, lower often horizontal or declining; head spreading, widest at base, spray short, angular, and bushy; thorns slender, 1-3 inches long, straight or slightly recurved.

Bark.—Bark of the whole tree, except the ultimate shoots, light gray, on the trunk and larger branches separating lengthwise into thin narrow plates, in old trees dark gray and more or less shreddy; season's shoots reddish or yellowish-brown, glossy.

Winter Buds and Leaves.—Buds small, ovate, reddish-brown, shining; scales broad, glandular-edged. Leaves simple, alternate, 3-5 inches long, light green above, lighter beneath, broad-ovate to broad-elliptical; rather regularly and slightly incised with fine, glandular-tipped teeth; apex acute; base wedge-shaped, truncate, or subcordate; roughish above and slightly pubescent beneath, especially along the veins; leaf-stalk pubescent; stipules linear, glandular-edged, deciduous.

Inflorescence.—May to June. In cymes from the season's growth; flowers white, 3/4 inch broad, ill-smelling; calyx lobes 5, often incised, pubescent; petals roundish; stamens indefinite, styles 3-5; flower stems pubescent; bracts glandular.

Fruit.—A drupe-like pome, ½-1 inch long, bright scarlet, larger than the fruit of the other New England species; ripens and falls in September.

Horticultural Value.—Hardy in New England. An attractive and useful tree in low plantations; rarely for sale by nurserymen or collectors; propagated from the seed.

DRUPACEÆ. PLUM FAMILY.

Leaves 3-5 inches long, light green on the upper side, paler beneath, pubescent when young; outline ovate-obovate or orbicular, crenulate-serrate; teeth not bristle-tipped; apex abruptly acuminate; base wedge-shaped, rounded, somewhat heart-shaped, or narrowing to a short petiole more or less red-glandular near the blade; stipules usually linear, ciliate, soon falling.

Inflorescence.—Appearing in May before the leaves, in lateral, 2-3-flowered, slender-stemmed umbels; flowers about an inch broad, white when expanding, turning to pink; calyx 5-lobed, glandular; petals 5, obovate-oblong, contracting to a claw; stamens numerous; style 1, stigma 1.

Fruit.—A drupe, oblong-oval, 1-1½ inches long, orange or orange-red, skin tough, flesh adherent to the flat stone and pleasant to the taste. The fruit toward the southern limit of the species is often abortive, or develops through the growth of a fungus into monstrous forms.

Horticultural Value.—Hardy throughout New England, and will grow, when not shaded, in almost any dry or moist soil. It has a tendency to sucker freely, forming low, broad thickets, especially attractive from their early spring flowers and handsome autumn leaves.

Distinguished from P. nigra by its sharply toothed leaves, smaller blossoms (the petals of which do not turn pink), and by its globose fruit.

Winter Buds and Leaves.—Buds small, broad-conical, acute. Leaves numerous, 3-4 inches long, 1-2 inches wide, light green and shining on both sides, ovate-lanceolate, oval or oblong-lanceolate, finely serrate; teeth sharp-pointed, sometimes incurved; apex acuminate; base obtuse or roundish; midrib depressed above; leafstalks short, channeled; stipules falling early.

Inflorescence.—June. Appearing with the leaves, in lateral clusters, the flowers on long, slender, somewhat branching stems; calyx 5-cleft; segments thin, reflexed; petals 5, white, obovate, short-clawed; stamens numerous; pistil 1; style 1.

Fruit.—About the size of a pea, round, light red, thin-meated and sour: stone oval or ovate.

Horticultural Value.—Hardy throughout New England; prefers a light gravelly loam, but grows in poor soils and exposed situations; habit so uncertain and tendency to sprout so decided that it is not wise to use it in ornamental plantations; sometimes very useful in sterile land. A variety with transparent yellowish fruit is occasionally met with, but is not yet in cultivation.

Habit.—Usually a shrub a few feet high, but occasionally a tree 15-25 feet in height, with a trunk diameter of 5-6 inches; head, in open places, spreading, somewhat symmetrical, with dull foliage, but very attractive in flower and fruit, the latter variable in color and quantity.

Bark.—Trunk and branches dull gray, darker on older trees, rough with raised buff-orange spots; branchlets dull grayish or reddish brown; season's shoots lighter, minutely dotted. Bitter to the taste.

Winter Buds and Leaves.—Buds 1-1¼ inches long, conical, sharp-pointed, brown, slightly divergent from the stem.

Leaves 2-5 inches long and two-thirds as wide, dull green on the upper side, lighter beneath, obovate or oblong, thin, finely, sharply, and often doubly serrate; apex abruptly pointed; base roundish, obtuse or slightly heart-shaped; leafstalk round, grooved, with two or more glands near base of leaf; stipules long, narrow, ciliate, falling when the leaves expand.

Inflorescence.—Appearing in May, a week earlier than P. serotina, terminating lateral, leafy shoots of the season in numerous handsome, erect or spreading racemes, 2-4 inches long; flowers short-stemmed, about ⅓ inch across; petals white, roundish; edge often eroded; calyx 5-cleft with thin reflexed lobes, soon falling; stamens numerous; pistil 1; style 1.

Fruit.—In drooping racemes; varying from yellow to nearly black, commonly bright red, edible, but more or less astringent; stem somewhat persistent after the cherry falls.

Horticultural Value.—Hardy throughout New England; grows in almost any soil, but prefers a deep, rich, moist loam. Vigorous young trees are attractive, but in New England they soon begin to show dead branches, and are so seriously affected by insects and fungous diseases that it is not wise to use them in ornamental plantations, or to permit them to remain on the roadside.

Prunus serotina, Ehrh.

Rum Cherry. Black Cherry.

Habitat and Range.—In all sorts of soils and exposures; open places and rich woods.

Maine,—not reported north of Oldtown (Penobscot county); frequent throughout the other New England states.

Habit.—Usually a medium-sized tree, 30-50 feet in height, with a trunk diameter varying from 8 or 10 inches to 2 feet; attaining much greater dimensions in the middle and southern states; branches few, large, often tortuous, subdividing irregularly; head open, widest near the base, rather ungraceful when naked, but very attractive when clothed with bright green, polished foliage, profusely decked with white flowers, or laden with drooping racemes of handsome black fruit.

Bark.—Bark of trunk deep reddish-brown and smooth in young trees, in old trees very rough, separating into close, thick, irregular, blackish scales; branches dark reddish-brown, marked with small oblong, raised dots. Bitter to the taste.

Winter Buds and Leaves.—Buds ovate, ⅛ inch long, covered with imbricated brown scales.

Leaves 2-5 inches long, about half as wide, dark green above and glossy when full grown, paler below, turning in autumn to orange, deep red, or pale yellow, firm, smooth on both sides, elliptical, oblong, or lanceolate-oblong; finely serrate with short, incurved teeth; apex sharp; base acute or roundish; meshes of veins minute; petioles ½ inch long, with usually two or more glands near the base of the leaf; stipules glandular-edged, falling as the leaf expands.

Inflorescence.—May to June. From new leafy shoots, in simple, loose racemes, 4-5 inches long; flowers small; calyx with 5 short teeth separated by shallow sinuses, persistent after the cherry falls; petals 5, spreading, white, obovate; stamens numerous; pistil one; style single.

Fruit.—September. Somewhat flattened vertically, ¼ inch in diameter; purplish-black, edible, slightly bitter.

Horticultural Value.—Hardy in New England; in rich soil in open situations young trees grow very rapidly, old trees rather slowly. Seldom used for ornamental purposes, but serves well as a nurse tree for forest plantations, or where quick results and a luxurious foliage effect is desired, on inland exposures or near the seacoast. The branches are very liable to disfigurement by the black-knot and the foliage by the tent-caterpillar. Large plants are seldom for sale, but seedlings may be obtained in large quantities and at low prices. A weeping horticultural form is occasionally offered. Propagated from seed.

Introduced from England; occasionally spontaneous along fences and the borders of woodlands. As an escape, 25-50 feet high, with a trunk diameter of 1-2 feet; head oblong or ovate; branches mostly ascending. Leaves ovate to obovate, more or less pubescent beneath, serrate, 3-5 inches long; leafstalk about ½ inch long, often glandular near base of leaf; inflorescence in umbels; flowers white, expanding with the leaves; fruit dark red, sweet, mostly inferior or blighted.

LEGUMINOSÆ. PULSE FAMILY.

Winter Buds and Leaves.—Winter buds minute, in clusters of three or four, the upper the largest. Leaves compound, once to twice pinnate, both forms often in the same leaf, alternate, 6 inches to 1 foot long, rachis abruptly enlarged at base and covering the winter buds: leaflets 18-28, ¾-¼ inches long, about one-third as wide, yellowish-green when unfolding, turning to dark green above, slightly lighter beneath, yellow in autumn; outline lanceolate, oblong to oval, obscurely crenulate-serrate; apex obtuse, scarcely mucronate; base mostly rounded; leafstalks and leaves downy, especially when young.

Inflorescence.—Early June. From lateral or terminal buds on the old wood, in slender, pendent, greenish racemes scarcely distinguishable among the young leaves; sterile and fertile flowers on different trees or on the same tree and even in the same cluster; calyx somewhat campanulate, 3-5-cleft; petals 3-5, somewhat wider than the sepals, and inserted with the 3-10 stamens on the calyx: pistil in sterile flowers abortive or wanting, conspicuous in the fertile flowers. Parts of the flower more or less pubescent, arachnoid-pubescent within, near the base.

Fruit.—Pods dull red, 1-1½ feet long, flat, pendent, and often twisted, containing several flat brown seeds.

Horticultural Value.—Hardy throughout New England, grows in any well-drained soil, but prefers a deep, rich loam; transplants readily, grows rapidly, is long-lived, free from disease, and makes a picturesque object in ornamental plantations, but is objectionable in public places and highly finished grounds on account of the stiff spines, which are a source of danger to pedestrians, and also on account of the long strap-shaped pods, which litter the ground. There is a thornless form which is better adapted than the type for ornamental purposes. The type is sometimes offered in nurseries at a low price by the quantity. Propagated from seed.

Robinia Pseudacacia, L.

Locust.

Habitat and Range.—In its native habitat growing upon mountain slopes, along the borders of forests, in rich soils.

Maine,—thoroughly at home, forming wooded banks along streams; New Hampshire,—abundant enough to be reckoned among the valuable timber trees; Vermont,—escaped from cultivation in many places; Massachusetts, Rhode Island, and Connecticut,—common in patches and thickets and along the roadsides and fences.

Habit.—Mostly a small tree, 20-35 feet high, under favorable conditions reaching a height of 50-75 feet; trunk diameter 8 inches to 2 ½ feet; lower branches thrown out horizontally or at a broad angle, forming a few-branched, spreading top, clothed with a tender green, delicate, tremulous foliage, and distinguished in early June by loose, pendulous clusters of white fragrant flowers.

Bark.—Bark of trunk dark, rough and seamy even in young trees, and armed with stout prickles which disappear as the tree matures; in old trees coarsely, deeply, and firmly ridged, not flaky; larger branches a dull brown, rough; branchlets grayish-brown, armed with prickles; season's shoots green, more or less rough-dotted, thin, and often striped.

Winter Buds and Leaves.—Winter buds minute, partially sunken within the leaf-scar. Leaves pinnately compound, alternate; petiole swollen at the base, covering bud of the next season; often with spines in the place of stipules; leaflets 7-21, opposite or scattered, ¾-1¼ inches long, about half as wide, light green; outline ovate or oval-oblong; apex round or obtuse, tipped with a minute point; base truncate, rounded, obtuse or acutish; distinctly short-stalked; stipellate at first.

Inflorescence.—Late May or early June. Showy and abundant, in loose, pendent, axillary racemes; calyx short, bell-shaped, 5-cleft, the two upper segments mostly coherent; corolla shaped like a pea blossom, the upper petal large, side petals obtuse and separate; style and stigma simple.

Fruit.—A smooth, dark brown, flat pod, about 3 inches long, containing several small brown flattish seeds, remaining on the tree throughout the winter.

Horticultural Value.—Hardy throughout New England in all dry, sunny situations, of rapid growth, spreading by underground stems, ordinarily short-lived and subject to serious injury by the attacks of borers. Occasionally procurable in large quantities at a low rate. In Europe there are many horticultural forms, a few of which are occasionally offered in American nurseries. The type is propagated from seed, the forms by grafting.

Easily distinguished from R. Pseudacacia by its smaller size, glandular, viscid branchlets, later period of blossoming, and by its more compact, usually upright, scarcely fragrant, rose-colored flower-clusters.

SIMARUBACEÆ. AILANTHUS FAMILY.

The tree is easily distinguished by its ill-scented compound leaves, often 2-3 feet long, by the numerous leaflets, sometimes exceeding 40, each ovate, or ovate-lanceolate, with one or two teeth near the base, by its vigorous growth from suckers, and in winter by the coarse, blunt shoots and conspicuous, heart-shaped leaf-scars.

ANACARDIACEÆ. SUMAC FAMILY.

Winter Buds and Leaves.—Buds roundish, obtuse, densely covered with tawny wool, sunk within a large leaf-scar. Leaves pinnately compound, 1-2 feet long; stalk hairy, reddish above, enlarged at base covering the axillary bud; leaflets 11-31, mostly in opposite pairs, the middle pair longest, nearly sessile except the odd one, 2-4 inches long; dark green above, light and often downy beneath; outline narrow to broad-oblong or broad-lanceolate, usually serrate, rarely laciniate, long-pointed, slightly heart-shaped or rounded at base; stipules none.

Inflorescence.—June to July. Flowers in dense terminal, thyrsoid panicles, often a foot in length and 5-6 inches wide; sterile and fertile mostly on separate trees, but sterile, fertile, and perfect occasionally on the same tree; calyx small, the 5 hairy, ovate-lanceolate sepals united at the base and, in sterile flowers, about half the length of the usually recurved petals; stamens 5, somewhat exserted; ovary abortive, smooth; in the fertile flowers the sepals are nearly as long as the upright petals; stamens short; ovary pubescent, 1-celled, with 3 short styles and 3 spreading stigmas.

Fruit.—In compound terminal panicles, 6-10 or 12 inches long, made up of small, dryish, smooth-stoned drupes densely covered with acid, crimson hairs, persistent till spring.

Horticultural Value.—Hardy throughout New England. Grows in any well-drained soil, but prefers a deep, rich loam. The vigorous growth, bold, handsome foliage, and freedom from disease make it desirable for landscape plantations. It spreads rapidly from suckers, a single plant becoming in a few years the center of a broad-spreading group. Seldom obtainable in nurseries, but collected plants transplant easily.

The cut-leaved form is cultivated in nurseries for the sake of its exceedingly graceful and delicate foliage.