THE SILVA OF COLORADO 



2 73 



Fig. i 6. — Canyon Thornapple (Crataegus 

 color -adoides) . X J . 



Fig. 15. — Thick-leaved Thornapple {Cra- 

 taegus doddsii). X$. 



Fig. 17. — Small -leaved Thornapple Fig. 18. — Shiny-leaved Thornapple (Crataegus 



(Crataegus saligna). Xj. erythropoda). X\. 



