Fig. 13. — Hubbardston X 73. Small, folded, stronglj' reflexed, somewhat waved, dull 

 serrate; serratures slightly forward, rather small, fairly regular, moderately deep, 

 distinct. Hubbardston leaves may be known by their small size, peculiar dull serra- 

 tures, folding, strong reflexion of the midrib and peculiar gray color. 



Fig. 14. — Northern Spy X -/3- Partly folded, slightly reflexed, waved, serrate. Serra- 

 tures well forward, medium or below, fairly regular, slightly curved, rather shallow, 

 quite distinct. Northern Spy leaves not are easy to distinguish from several related 

 varieties. Their peculiar folding, rather sharp serration and narrow apex serve to 

 distinguish them from most varieties. 



