SIMPLE SPIRAL ENTIRE LEAVES 



69 Leaves 15-30 cm. long; end-bud scaleless, others scaled, brown- 

 hairy _ _ PAPAW (ASIMINA) 



69 Leaves usually not more than 15 cm. long; if more, then end- 

 bud scaled 70 



70 Leaves palmately veined 71 



70 Leaves pinnately veined 73 



71 Upper side-veins curving towards tip of leaf ; trunk often warty 



HACKBERRY (CELTIS) 



71 Upper side-veins straight or curving towards side-margin ; 



trunk not warty 72 



72 Leaves silky on veins of under surface, spicy; leaf-scars not 



fringed SPICE BUSH (BENZOIN) 



72 Leaves usually hairless on under surface, not spicy; leaf-scars 



fringed at top JUDAS-TREE, REDBUD (CERCIS) 



73 Upper side-veins curving towards leaf-tip ; twigs greenish 



DOGWOOD (CORNUS) 



73 Upper side-veins straight or curving towards side-margin, or 



else twigs not green ._ 74 



74 Juice of leaves spicy '5 



74 Juice of leaves not spicy 76 



75 Twigs and bud-scales brown; stipule-scars absent 



SPICE BUSH (BENZOIN) 



75 Twigs and bud-scales green; stipule-scars present..(SASSAFRAS) 



76 Mature leaves hairy on both surfaces ; young twigs hairy _ 77 



76 Mature leaves hairless at least on upper surface 78 



77 Winter-buds showing about 4 scales, all buds about same shape 



PEAR (PYRUS) 



77 Flower-buds showing about 12 scales, much larger than leaf- 

 buds and of a different shape CORKWOOD (LEITNERIA) 



15 



