Description of Foreign Trees 
(calyx 5-parted in latter, 5 distinct sepals in former, petals 5 
or 10); June; corky bark. Amur. 
47. Flowering Ash. (Fraxinus ornus.) 
LEAF: pinnate, opposite ; leaflets, 5-9, serrate, entire at base, 
small, oblong to lance-shaped, downy beneath. FLOWER: small 
(petals 4 or 2, greenish), along branch, with or before leaves. 
Southern Europe. 
48. European or English Ash. (Fraxinus excelsior.) 
LEAF: pinnate, opposite ; leaflets, 5-9, serrate, lance-oblong, 
bright green, almost stemless. FLOWER: no petals, hardly 
calyx. War. weeping ash (in Park) has pendent branches. 
Southern Europe. 
49. Red Horse-chestnut. (Pavia rubra.) 
LEAF : palmate, opposite ; leaflets, 5-7, bright green. FLOWER: 
rose-red (petals 4, stamens usually 8), in dense panicles, early 
summer ; fruit prickly ; probably a hybrid; low tree and shrub. 
Asia. 
50. Osage Orange. (Maclura aurantica.) 
LEAF: 3-5’, simple, alternate, entire, lance-ovate; fruit 
crowded in spherical head, size of orange; bark rough, yellow- 
tinged ; usually spiny. Arkansas, etc. (Pl. III.) 
51. Common Sandthorn. (Hippophz rhamnoides.) 
LEAF: 1'-2', simple, alternate, entire, long-elliptical, green 
above, silvery beneath. FLower: yellowish or greenish, the 
staminate with 2 small, ovate sepals, 4 stamens; pistillate with 
lobed, tubular calyx ; fruit orange-color ; 10°—20° ; often thorny. 
Europe. 
52. Chinese Honey-locust. (Gleditschia sinensis.) 
LEAF: pinnate or twice-pinnate; leaflets small, entire, ova/, 
broader than in native species. FLOWERS same as, thorns 
stouter than, in our species. 
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