SUMMER 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. Leaflets usually 5-7, glabrous beneath; buds dome-shaped, 
greenish; kernel of nut sweet. 
c. Twigs long-hairy; fruit less than 1 inch Iong........... 
$yv4 sap Meee a ADEE Chas ea gor C. microcarpa, p. 75. 
cc. Twigs glabrous or nearly so; fruit 114-2 inches long.... 
Deals aie we wine Midoase ath a aeeae ares cu lmaye C. glabra, p. 77. 
bb. Leaflets usually 7-11, more or less downy beneath; buds 
elongated, bright yellow; kernel of nut bitter............ 
Mian date Re ila rradeees gue eee RNS C. cordiformis, p. 79. - 
aa. Bark of trunk deeply ‘furrowed or shaggy; husk of fruit 
more than % inch thick, 
b. Twigs more or less pubescent; leaflets 5-7, more or less 
pubescent beneath. 
c. Twigs brownish; buds densely hairy; fruit 124-2 inches 
IGWB. ied ohadsaaimoniine ten ead eh auanlsaauitte C. alba, p. 73. 
ce. Twigs orange; buds merely puberulous; fruit 134-2%4 
inches long; (leaflets usually 7)......C. laciniosa, p. 71. 
bb. Twigs tending to be glabrous; leaflets usually 5, glabrous 
DEMCA tiacicnondes va ui ee aacianateade genes te C. ovata, p. 69. 
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