Conn .—Crataeg us 
C 
27 
155 Upper surface of mature leaves rough. 
pedicillata Sarg. 
156 Leaves broadest at the middle—157 
156 Leaves broadest toward the base—158 
157 Leaves broadly egg-shaped or round. Fruit less than % 
inch thick. Stones % inch long— Crataegus rotundifolia 
Moench. 
157 Leaves narrowly egg-shaped. Fruit more than % inch 
thick. Stones % inch long. Mt. Desert Island, Me., 
and vicinity— Crataegus Joncsae Sarg. 
158 Mature leaves smooth above or nearly so—159 
158 Mature leaves hairy or woolly, or roughened, above—161 
159 Leaves longer than broad—1(>0 
159 Leaves about as long as broad. Western X. E.— Crataegus 
Pringlei Sarg. 
160 Flower and fruit stalks very hairy— Crataegus anomala 
Sarg. 
160 Flower and fruit stalks nearly smooth— Crataegus Holmesi- 
ana Ashe. 
161 Fruit pear-shaped or somewhat elongated, ripening in 
Sept, and Oct.—162 
161 Fruit globular, ripening in Aug. Southern X. E.— Cratae¬ 
gus Arnoldiana Sarg, 
162 Leaves thickish or somewhat leathery. Northwestern 
Vt.— Crataegus Champlainensis Sarg. 
162 Leaves thin. Mass, northward— Crataegus submollis Sarg. 
Cherry, Plum, Peach —Leaves simple. Fruit fleshy or juicy, 
with a stony seed-like interior which incloses a single seed. 
163 Flower and fruit stalks numerous, about % inch long, 
arising from a common much elongated axis. Fruit about 
inch thick—164 
163 Flower and fruit stalks apparently arising from a common 
point, or else from an axis hardly longer than the long 
individual fruit and flower stalks—165 
161 Marginal teeth of the leaves very sharply pointed—Choke 
Cherry, Prunus virginiana L. 
