KEY TO TREES AND SHRUBS IN AUTUMN 



215 a Fruit bright red Amygdalus. p 170 



b Fruit not bright red Mains, p 168 



216 a Shrub 1-3 ft. high; leaves usually i in. or less long 



Amelanchier spicata. p 168 

 b Shrubs or small trees 5 ft. or more high ; leaves 1-3 



in. long 217 



217 a Fruit in corymbs Aronia. p 168 



b Fruit in racemes Amelanchier. p 168 



218 a Fruit a pod 2-3 in. long; leaves round-heart-shaped, 



2-6 in. broad Cercis. p 170 



b Fruit wanting or not completely as in a 219 



219 a Shrubs or small trees cultivated for their flowers .... 220 

 b Shrubs or small trees not cultivated for their flowers. . . . 225 



220 a Fruit a capsule about i in. long. . . .Hibiscus syriacus. p 185 

 b Fruit wanting or not completely as in a 221 



221 a Leaves very sparingly toothed, becoming red in autumn 



Stuartia. p 186 

 b Leaves not completely as in a 222 



222 a Shrub or small tree 6 ft. or more high. .Exochorda. p 164 

 b Shrubs 1-6 ft. high 223 



223 a Leaves very sharply and doubly toothed, with slender 



apex Kerria. p 164. 



b Leaves not completely as in a 224 



224 a Leaves 2-5 in. long, rounded or ovate; fruit a capsule 



Lavatera. p 185 

 b Leaves not completely as in a Spiraea, p 163 



225 a Shrub growing in salt marshes; fruit a capsule about 



i in. long Hibiscus, p 185 



b Shrubs or trees not growing in salt marshes 226 



226 a Trees cultivated for their fruit 227 



b Trees or shrubs not cultivated for their fruit 231 



727 a Leaves at least 3 times longer than broad 



Amygdalus persica. p 170 

 b Leaves less than 3 times as long as broad 228 



228 a Leaves hairy beneath Mains mains, p l6Q 



b Leaves not hairy beneath 229 



229 a Tree somewhat cone-shaped ; fruit usually obovate, pear- 



shaped Pyrus. p 167 



b Trees not cone-shaped; fruit usually ovate to globose.. 230 



230 a Bark usually with horizontal markings; fruit a drupe 



Prunus. p 169 

 b Bark not with horizontal markings; fruit a pome 



Mains, p 168 



231 a Bark on trunk of tree peeling in rather thin, vertical 



strips, somewhat shaggy; fruit of inflated capsules in 



clusters Ostrya. p 14.2 



b Bark and fruit not completely as in a 232 



79 



