28 
104 
165 
lOo 
106 
160 
166 
10.7 
107 
168 
108 
Marginal teeth of the leaves blunt, incurved, or glandular 
Black Cherry, Wild Black Cherry, Rum Cherry, Primus 
serotma Ehrli. 
Flower and fruit stalks very short, inch or less. Leaves 
narrow. Fruit velvety-hairy, 1 inch or more thick, stone 
corrugated. Cult.—Peach, Primus Persica (L.) Stokes. 
r lower and fruit stalks conspicuous, or elongated. Fruit 
smooth, stone not corrugated—1(56 
oOMJM *l>an>Iy pointed. Fruit red, about inch 
thick—Wild Red Cherry, Pin Cherry, Pigeon Cherry, Bird 
Cherry, Fire Cherry, Primus pcnnsijlranica L. f 
liH'th ot leaves sharply pointed. ' Fruit reddish, % to 1 
inch thick Conn.—Wild Plum, Yellow Plum, Primus 
amcricana Marsh. 
Teeth of leaves blunt or glandular-tipped—167 
Margins of calyx lobes finely glandular-toothed. Mature 
fruit smooth, orange-red or yellowish, about 1 inch long— 
P Um> ** orsc P^m, Wild Plum, Primus 
Margin of calyx lolies entire or nearly so—108 
Flower-producing buds developing both flowers and leaves 
Inner scales at the base of the flower stalks longer than 
Sw "l cl’ * ro 2f n *- , Fr,lit s "' wt - Cult. and escaped— 
Sweet Cherry, Primus Avium L 1 
Flower-producing buds developing only flowers. Inner 
sca.e.- at the base of the flower stalks about like the outer 
not spreading Frrnt acid, red. Cult, and escaped— 
Sour Cherry, Primus Cerasus L. 
L<xtst —L 
ix'an 1 oV pea po<b wiirtfTir iS* t0 a 
escaped. 
Cult, and 
-Clammy Locust, Rose Acacia, Robinia 
1M Young twigs sticky. 
viscosa Vent. 
# 
