eaves are
somewhat smaller, the thorns, though occasionally branching, do not
branch so extensively, and the pod is very short and rounded.

[Illustration: G. sinensis.]

3. =Gleditschia sinensis=, Lam. (CHINESE HONEY-LOCUST.) A tree with
stouter and more conical thorns, broader and more oval leaflets. A
medium-sized or small tree, often cultivated. This species, like the
others, has a thornless variety.

GENUS =35. ALBIZZIA.=

Trees or shrubs with abruptly pinnate leaves. Fruit a broad-linear
straight pod.

[Illustration: A. julibrissin.]

=Albizzia julibrissin=, Boivin. (SILK-TREE.) Leaves twice abruptly
pinnate, of many (over 400) leaflets; leaflets semi-oblong, curved,
entire, acute, with the midrib near the upper edge. Flowers in globose
heads forming panicles. Fruit plain pods on short stems. A very
beautiful small tree, introduced from Japan; probably not hardy north of
Washington. The figure shows only one of the lowest and shortest side
divisions (pinnae) of the leaf. The pinnae increase in length and number
of leaflets to the end of the leaf.

ORDER =XVIII. ROSACEAE.= (ROSE FAMILY.)

A large and very useful order of trees, shrubs, and herbs of temperate
regions.

GENUS =36. PRUNUS.=

Trees or shrubs with simple, alternate, deciduous, usually serrate,
stipulate leaves, without lobes. The stems produce gum when injured.
Foliage and nuts have flavor of peach-leaves. Flowers conspicuous,
usually white, or light pink, often in clusters, peach-blossom-shaped;
in early spring. Fruit in size from pea to peach, a rounded drupe with
one stony-coated seed.

* Drupe large, soft velvety on the surface; stone rough (Peach,
Apricot) 1.

* Drupe medium, covered with a bloom; stone smooth, flattened
(Plums). (=A.=)

=A.= Usually thorny; wild, rarely cultivated. (=B.=)

=B.= Leaves acuminate 2, 3.

=B.= Leaves not acuminate 4, 5.

=A.= Not thorny; cultivated 6.

* Drupe medium to small, smooth, without bloom (Cherries).
(=C.=)

=C.= Drupes clustered in umbels, 1/2-1 in. in diameter. (=D.=)

=D.= Small cultivated tree; drupe globose, rather large,
very sour 9.

=D.= Large cultivated tree; drupe large, somewhat pitted