Trees with milky juice and alternate, deciduous, exstipulate, broad, heart-shaped, usually rough leaves. Flowers inconspicuous; in spring. Fruit blackberry-like in shape and size; in summer. * Leaves rough; fruit dark-colored 1. * Leaves smooth and shining; fruit white to black 2. [Illustration: M. rùbra.] 1. =Mòrus rùbra=, L. (RED MULBERRY.) Leaves broad, heart-shaped, 4 to 6 in. long, serrate, rough above and downy beneath, pointed; on the young shoots irregularly lobed. Fruit dark red, almost purple when ripe, cylindrical; not found on all the trees, as the flowers are somewhat dioecious; ripe in July. Wood yellow, heavy and durable. Usually a small tree, 15 to 60 ft. high; wild throughout, also cultivated. [Illustration: M. álba.] 2. =Mòrus álba=, L. (WHITE MULBERRY.) Leaves obliquely heart-ovate, pointed, serrate, smooth and shining; lobed on the younger growths; 2 to 7 in. long. Fruit whitish, oval to oblong; ripe in July. A small tree from China, planted for feeding silkworms, but now naturalized throughout. Var. _multicaulis_ has large leaves, and is considered better for silkworm food than the usual form. It is not very hardy, as it is frequently winter-killed in the latitude of New York City. Var. _Downingii_ (Downing's everbearing Mulberry) has large leaves and very large, dark red or black fruit, of excellent flavor, which does not ripen all at once as most Mulberries do. GENUS =79. BROUSSONÈTIA.= Trees with milky juice and alternate, deciduous, stipulate, broad, very hairy leaves. Flowers dioecious. Fruit (only on a portion of the plants) similar to the common Mulberry. [Illustration: B. papyrífera.] =Broussonètia papyrífera=, L. (PAPER-MULBERRY.) Leaves ovate to heart-shaped, variously lobed, deeply so on the young suckers, serrate, very rough above and quite soft-downy beneath; leaves on the old trees almost without lobes; bark tough and fibrous. Flowers in catkins, greenish; in spring. Fruit club-shaped, dark scarlet, sweet and insipid; ripe in August. Small cultivated tree, 10 to 35 ft. high, hardy north to New York; remarkable for the great variety in the forms of its leaves on the young trees. ORDER =XXXVII. PLATANÀCEÆ.= (PLANE-TREE FAMILY.) A very small order, containing but one genus: GENUS =80. PLÁTANUS.= Trees with alternate, simple, large, palmately lobed leaves. The base of the petiole is hollowed to cover the bud. Flowers inconspicuous; in early spring. Fruit a large, dry ball, hanging on a long peduncle, and remaining on the tree through the winter. Large tree with white bark separating into thin, brittle plates. [Illustration: P. occidentàlis.]