WINTER KEY TO THE SPECIES OF AESCULUS 



a. Terminal bud about */$ inch long; bud-scales covered with 

 a glaucous bloom, not conspicuously resinous; bark broken 



into thick plates; prickly bur about i inch in diameter 



A . glabra, p. 199. 



aa. Terminal bud i-i l /2 inches long; bud-scales conspicuously 

 sticky-resinous, glistening; bark broken into thin plates; 



prickly bur about 2 inches in diameter 



A. hippo cast anum, p. 197. 



195 



