ANALYTICAL KEY 



2. LEAF-SCARS ALTERNATE (continued). 



Buds small, acute, reddish brown ; bundle-scars on 

 leaf-scars borne in a circle ; juice milky. Mul- 

 berry. (Morus, p. 123.) 



Buds ovate ; twigs green, slightly aromatic ; pith 

 thick, mucilaginous. Sassafras. {Sassafras, 



P- I47-) 



Buds obtuse, dark red, their scales hairy ; twigs 

 with red leaf-scars and stout spur-like branchlets. 

 Tupelo. (Nyssa, p. 120.) 



Buds small, covered by closely overlapping scales ; 

 twigs slender, with pungent odor ; leaf-scars oval. 

 Cherry. (Prunus, p. 171.) 



Buds acute, orange-brown; twigs furnished with 

 corky wings ; pith pentagonal in shape. Liquid- 

 amber. (Liquidambar, p. 144.) 

 Twigs stout, buds large. 



Buds with loosely appressed scales ; leaf-scars 

 conspicuous; stipule-scars absent. Hickory, 

 except Carya cordiformis. (Carya, p. 49.) 



Buds with closely appressed pubescent scales ; leaf- 

 scars V-shaped, less conspicuous ; stipule-scars 

 present. Mountain Ash. (Pyrus, p. 170.) 



Buds covered by imbricated scales, resinous and 

 gummy. Poplar. (Populus, p. 179.) 



Buds covered by a single scale of two connate 

 stipules. 



Branchlets slender. 



Lateral buds often larger than the terminal bud. 

 Willow. (Salix, p. 177.) 



Buds compressed, obtuse; branches purplish 

 brown. Tulip Tree. (Liriodendron, p. 155.) 



