ed, rough. Fruit smooth, with the wing
deeply notched. A tall and beautiful cultivated tree, with the branches
growing out from the trunk more abruptly than those of the American Elm,
and thus forming a more pyramidal tree. A score of named varieties are
in cultivation in this country, some with very corky bark, others with
curled leaves, and still others with weeping branches.

[Illustration: U. racemosa.]

4. =Ulmus racemosa=, Thomas. (CORK OR ROCK ELM.) Leaves 2 to 4 in. long,
obovate-oblong, abruptly pointed, often doubly serrated, with very
straight veins; twigs and bud-scales downy-ciliate; branches often with
corky ridges. Fruit large (1/2 in. or more long), with a deep notch;
hairy. A large tree with fine-grained, heavy and very tough wood.
Southwest Vermont, west and south, southwestward to Missouri, on
river-banks.

[Illustration: U. alata.]

5. =Ulmus alata=, Michx. (WAHOO OR WINGED ELM.) Leaves small, 1 to 2 in.
long, ovate-oblong or oblong-lanceolate, acute, thickish, downy beneath
and nearly smooth above, sharply serrate. Bud-scales and branchlets
nearly smooth. Notch in the wing of the fruit deep. A small tree, 30 to
40 ft. high, the branches having corky wings. Wild, Virginia, west and
south; rarely cultivated.

[Illustration: U. Americana.]

6. =Ulmus Americana=, L. (AMERICAN OR WHITE ELM.) Leaves 2 to 4 in.
long, obovate-oblong or oval, abruptly sharp-pointed, sharply and often
doubly serrated, soft-pubescent beneath when young, soon quite smooth;
buds and branchlets smooth. Fruit 1/2 in. long, its sharp points incurved
and closing the deep notch; hairy only on the edges. A large ornamental
tree, usually with spreading branches and drooping branchlets, forming a
very wide-spreading top. Wild throughout in rich, moist soil; common in
cultivation.

GENUS =75. PLANERA.=

Trees or tall shrubs with alternate, simple, pointed, 2-ranked,
feather-veined, toothed leaves. Flowers inconspicuous, with the leaves
in spring. Fruit a small, nut-like, scaly, globular drupe, ripe in
autumn. Bark scaling off like that of the Sycamore.

[Illustration: P. aquatica.]

1. =Planera aquatica=, Gmel. (AMERICAN PLANER-TREE.) Leaves
ovate-oblong, small, 1 to 1 1/2 in. long, on short stems, sharp-pointed,
serrate with equal teeth, smooth, green above and gray below, not
oblique at base. Flowers minute, in small heads, appearing before the
leaves. Fruit a scaly, roughened nut, 1/4 in., raised on a stalk in the
caly