KEY TO TREES AND SHRUBS IN AUTUMN 



232 a Leaves rounded, coarsely toothed, usually unequilateral 



at the base ; buds often reddish Tilia. p 185 



b Leaves not completely as in a 233 



233 a Secondary veins of leaf very prominent and parallel, 



extending obliquely to the midrib ; leaves unequi- 

 lateral at the base Ulmus. p 144 



b Leaves not completely as in a 234 



234 a Leaves strongly 3-veined beneath; fruit 3-lobed; shrub 



2-5 ft. high Ceanothus. p 184 



b Leaves not noticeably 3-veined beneath 235 



235 a Leaves sharply toothed only toward apex, entire at base 



Spiraea salicifolia. p 163 

 b Leaves not completely as in a 236 



236 a Shrub with woolly branches; leaves densely woolly 



beneath Spiraea tomentosa. p 163 



b Shrubs or trees not completely as in a 237 



237 a Shrub with ovate or obovate, finely toothed, often 



yellowish-green leaves Celastrus. p 182 



b Shrubs or trees not completely as in a 238 



238 a Leaves usually more than twice as long as broad; 



lateral buds with one scale Salix. p 140 



b Leaves usually not more than twice as long as broad ; 



lateral buds with numerous scales 239 



239 a Petioles of leaves flattened laterally Populus. p 139 



b Petioles of leaves not flattened laterally 240 



240 a Low shrub 5 ft. or less high 



Vaccinium pennsylvanicum. p 196 

 b Trees 8 ft. or more high 241 



241 a Terminal winter buds often ^ in. long. . . .Populus. p 139 

 b Terminal winter buds less than V-> in. long; milky 



juice often exuding from broken twigs 242 



242 a Twigs densely hairy Broussonetia. p 14.5 



b Twigs not hairy Morus. p 14.4. 



80 



