KEY, BY MEANS OF THE LEAVES, TO THE TREES, ETC. 79 



c. Stems erect and independent. 



Sap ILke milk Fig-tree, 382 



Sap not milliy. 

 Leaves opposite. 



Stipules and glands on the Tpeiiole.. . .Guelder-rose, 325 



No stipules or glands Sycamore a,nd Maples,158 



Leaves alternate. 

 Four to five inches across (large tree) Plane, 381 

 One to two inches across Spircea opulifolia, 203 



7. Simple and undivided. 



A. Feather-veined, distinctly and very elegantly. 



(Fig. 40.) 

 Leaf three to five times as long as broad .... ^ .Spanish Chesnut, 365 

 Leaf oval or roundish. 



1. Kemarkably white underneath White-beam, 189 



2. Blade larger on one side of the midrib. (See 



Fig. 133) Elm, 204 



3. Eoundish, with a large projecting point at 



the top Hazle-nut, 365 



4. Eoundish and obtuse. (Fig. 190) Alder, 371 



5. Oval or elliptical. 



Serrate. (Fig. 188 ) Hornbeam, 365 



Entire or nearly so. (Fig, 186) Beech, 365 



B. Lateral veins spreading irregularly. (Fig. 41.) 



i. Stems climbing by means of suckers Ivy, 346 



ii. Stems twining Honeysuckle, 325 



iii. Stems erect and independent. 



a. Leaves aromatic Bay -tree, 169 



b. Leaves more or less prickly Holly, 209 



c. Trunk remarkably white (tail tree) Birch, 371 



d. Blade roundish or cordate. 



Leaves opposite Lilac, 220 



Leaves alternate. 



Petiole compressed laterally Aspen, 380 



One side larger. (Fig. 97) Lime-trees, 110 



Very rough Mulberry, 382 



e. Blade triangular or rhomboid Poplars, 379 



/. Blade lanceolate, five to six inches long. 



Narrow lanceolate. 



Trained against walls Peach, 192 



Growing independently. 

 With white silky hairs on both Bu\es..White Willow, 377 

 Glabrous. 



Serrate Willows, 376, 381 



Almost entire A hnond, 192 



