ROSACEAE. 



8. Style one. 9. 



Styles two or three. 19. 



9. Spiny. 10. 

 Unarmed. 



10. Leaves moderately lobed. n. 

 Leaves incised. 



11. Shrubby, ever-blooming. 

 Tree-like. 12. 



'12. Somewhat fastigiate. 

 Not fastigiate. 13. 



13. Flowers white. 14. 

 Flowers rosy or red. 15. 



14. Flowers single. 

 Flowers double. 



15. Somewhat weeping. 

 Not weeping. 16. 



16. Flowers single. 17. 

 Flowers double. 



17. Flowers white at center. 

 Flowers colored throughout. 



18. Flowers white. 19. 

 Flowers rosy or red. 20. 



19. Fruit bright red. 

 Fruit yellow. 



20. Flowers single, white at center. 

 Flowers double, red throughout. 



21. Leaves scarcely longer than broad. 



C. monogyna inermis. 



C. monogyna laciniata 

 C. monogyna semperflorens 



C. monogyna stricta. 



C. monogyna. 

 C. monogyna albo-plena. 

 C. monogyna roseo-pendula. 



C. monogyna rubro-plena. 

 C. monogyna rosea. 

 C. monogyna punicea. 



C. Oxyacantha. 



C. Oxyacantha aurea. 



C. Oxyacantha bicolor. 



C. Oxyacantha Paulii. 



C. rotundifolia 



Leaves distinctly longer than broad. 22. 



22. Leaves large, softly hairy beneath. 23. 



Leaves glabrate. C. pruinosa. 



23. Armed. C. mollis. 

 Spineless. C. mollis inermis. 



PYRACANTHA. Firethorn. 



Evergreen shrubs with hard brownish wood with numerous 

 minute diffused ducts and fine medullary rays; slender some- 

 what fluted twigs often forming spurs or transformed into 





