Fig. 11.^ Ben Davis X -A. Small, folded, somewhat reflexed, waved, dull serrate or 

 crenate; base narrow; serratures moderately forward, small, quite regular, somewhat 

 curved, shallow. Ben Davis may be known by its distinct waving, narrow base and 

 dull, shallow serratures. 



Fig. 12. — York Imperial X M- Medium size, partly folded, reflexed, nearly even, dull 

 serrate; serratures forward, large, irregular, rather deep, quite distinct. York Im- 

 perial may be known by its peculiar dull serrate, partly folded, spreading leaves. 



