138 TREES OF THE NORTHERN UNITED STATES 
1, Morus ribra, L. (Rep 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 some- 
what diwcious; ripe in July. Wood yellow, heavy 
and durable. Usually a small tree, 15 to 60 ft. 
high; wild throughout, also cultivated. 
2. Morus 4lba, L. (WxITE MULBERRY.) 
Leaves obliquely heart-ovate, pointed, ser- 
rate, 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 \ 
eonsidered better for silkworm food than Matha, 
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. BROUSSONETIA. 
Trees with milky juice and alternate, deciduous, stipu- 
late, broad, very hairy leaves. Flowers dicecious. Fruit 
(only on a portion of the plants) similar to the common 
Mulberry. 
Broussonétia papyrifera, 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 ; 
inspring. 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. 
B. papyrifera. 
