159 
. Leaves doubly compound; pods 6-10 in. long 
сейба. (Gymnocladus dioica.) 
62. 
b. Leaves singly compound; pods 6 in. or less longi i eae argh rg 
. Usually short spines at the base of the petiole in pem of dieere branches 
zigzag; pods about 4 in. long; bark with long furr 
Black Locust. Dus pseudacacia). 
. No spines at base of SEM as in a; cultivated t 
Pagoda rie (Sophora japonica.) 
63 a. Leaflets with entire margins; cultivated tree. 
Yellow-wood. (Cladrastis lutea.) 
b. Leaflets with margins more or less toothed or incised -64, 
64 a. Leaflets with only 2-8 teeth at the base; fruit winged. 
Ailanthus. (Ailanthus glandulosa.) 
b. Leaflets not completely asin ОЛ ыы ОО а PUER Vu 65. 
65 a. Leaflets irregularly toothed or incised; cultivated tree 
Varnish Tree. сані paniculata.) 
b. Leaflets more or less regularly: toothed.. oci.. 2. Sh Ld dA IRAE rua 66. 
66 a. гаш toothed towards the apex, usually less than т in. broad; fruit of red 
MEC REL Cen e E д Mountain . (Sorbus americana.) 
b. Minis ped toothed all атта frit of nita 22 ДӘЛ ШЙ 67 
575. Lralete 13-25 toreach Мар И a поса 68. 
. Native trees; nuts not Brie: ks Nu paca in a e MM c aoc ae 
. Leaflets 5-11 
. Cultivated tree; nuts with "ег abad 3/4 in. broad. 
ian Walnut. (Pterocarya fraxinifolia.) 
69 a. Leaflets with sticky hairs; nut oblong.....Butternut. (Juglans cinerea.) 
75a 
. Native trees; shuck splitting from the nut.. ё 
. Bark of trunk shaggy іп bes trees; ева nis c 72 
b 
. Fruit in clusters of 2 or more... Oriental Sycamore. (Platanus orientalis.) 
eaflets not with sticky hairs; nut globose...Black Walnut. (Juglans nigra.) 
. Cultivated tree; shuck of nut not splitting. 
Walnut. (Juglans regia.) 
71. 
Bark not shaggy; laete $- EE л Шш ло лу и го лл Еее a3. 
b. 
. Nut about 3/4 in. or more slate shuck comparatively thick; common tree. 
Shagbark 
Hickory. ( Hicoria ovata.) 
. Nut less than 3/4 in. broad; shuck comparatively thin; tree not common. 
: mall 
-fruited Hickory. ix. microcar pa.) 
. Terminal bud yellowish, without thin d leaflets 
Bitti алы. чл тїпїта.) 
. Terminal bud not yellowish, with thin semet leaflets 5-9 74 
Twigs covered with hairs just back of the terminal bud; leaflets usually 7; 
shuck of nut comparatively thick.......... Mockernut. (Hicoria alba.) 
. Twigs not covered with hairs as in a; leaflets usually 5; shuck of nut thin. 
insat dense — ) 
. Trees with light colored patch ti where bark 
has peeled; fruit gobos with stems 2 in. or more long 76 
vui 
b. Fruit single, not in clusters... American Sycamore. (Platanus occidentalis.) 
