WINTER KEY TO THE SPECIES OF CARYA 
a. Bark of trunk essentially smooth, not deeply furrowed nor 
shaggy; husk of fruit less than % inch thick. 
b. Terminal bud narrow, long-pointed, flattish, bright yellow; . 
kernel of nut bitter................. C. cordiformis, p. 79. 
bb. Terminal bud broad, dome-shaped, not bright yellow; 
kernel of nut sweet. 
c. Buds greenish; twigs glabrous; fruit 114-2 inches long 
sis carcass easel eRe SEM A tae Le dealtehG uae ts C. glabra, p. 77. 
cc. Buds red-brown; twigs long-hairy; fruit less than 1 inch 
LONG gases ede enrete eeetetensie C. microcarpa, p. 75. 
aa. Bark of trunk deeply furrowed or shaggy; husk of fruit 
more than % inch thick. 
b. Twigs more or less pubescent; buds more or less pube- 
scent. 
c. Buds %4-34 inch long, densely hairy; outer bud-scales 
deciduous in autumn; twigs brownish; fruit 114-2 inches 
IONS es eena yet ang sors wERaaeIees wae Nes C. alba, p. 73. 
cc. Buds about 1 inch long, merely puberulous; outer bud- 
scales persistent until spring; twigs orange colored; 
fruit 134-2%4 inches long............. C. laciniosa, p. 71. 
bb. Twigs tending to be glabrous; buds glabrous or nearly so 
niiteonetega aie Gap hadebMAcasokteiade C. ovata, p. 60. 
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