The Trees of Vermont 83 



SUMMER KEY TO THE SPECIES OF CARYA 



a. Bark of trunk essentially smooth, not deeply furrowed nor shaggy; 

 husk of fruit less than y^ inch thick. 



/'. Leaflets usually 5-7, glabrous beneath, the upper 2-2^ inches 

 broad; buds dome-shaped, greenish; kernel of nut sweet, 



C. glabra, p. 89. 

 hb. Leaflets usually 7-11, more or less downy beneath, the upper 1- 

 I3/2 inches broad; buds long-pointed, flattish, bright yellow; ker- 

 nel of nut bitter C. cordiformis, p. 91. 



aa. Bark of trunk deeply furrowed or shaggy ; husk of fruit more 

 than y^ inch thick. 



b. Twigs more or less pubescent ; bark not shaggy ; leaflets 5-7, 

 more or less pubescent beneath ; buds densely hairy, 



C. alba, p. 87. 

 bh. Twigs tending to be glabrous ; bark distinctly shaggy ; leaflets 

 usually 5, glabrous beneath ; buds glabrous or nearly so, 



C. ovata, p. S5. 



WINTER KEY TO THE SPECIES OF CARYA 



a. Bark of trunk essentially smooth, not deeply furrowed nor shaggy ; 

 husk of fruit less than Y^ inch thick. 

 b. Terminal bud narrow, long-pointed, flattish, bright yellow, about 



■)4 inch long; kernel of nut bitter C. cordiformis, p. 91. 



bb. Terminal bud broad, dome-shaped, greenish, /4-/^ inch long; 



kernel of nut sweet C. glabra, p. 89. 



aa. Bark of trunk deeply furrowed or shaggy; husk of fruit more than 

 ■ ]'i inch thick. 

 b. Twigs more or less pubescent ; buds densely hairy, the outer bud- 

 scales deciduous in autumn; bark not shaggy. .C. alba, p. 87. 

 bb. Twigs tending to be glabrous ; buds glabrous or nearly so, the 

 outer bud-scales not deciduous in autumn ; bark distinctly 

 shaggy C. ovata, p. 85. 



