102 



ROSACEAE. 



2. Buds round-ovoid, scarcely longer than thick. 3. 

 Buds ovoid-conical, distinctly elongated. (Plum). 9. 



3. Leaves round-ovate, firm, glabrous : buds dark, with 



ciliate scales. (Apricot). P. Armeniaca. 



Leaves distinctly longer than broad. (Plum). 4. 



4. Buds puberulent, dark red. P. domestica. 

 Buds glabrous. 5. 



5. Scales red-brown, ciliate : leaves small. P. angustifolia. 

 Bud-scales brown, not ciliate. 6. 



6. Buds obtuse : petiole with nectar-glands. P. hortulana. 

 Buds acute: petiole without glands. 7. 



7. Leaves green. 8. 



Leaves purple. P. cerasifera Pissadii. 



8. Flowers single. P. cerasifera. 

 Flowers double. P. cerasifera Plantieriensis. 



9. Buds red-brown, short (3-4 mm.). P. americana. 

 Buds blackish or gray, long (4-5 mm.). P. nigra. 



10. Buds round-ovoid, n. 



Buds distinctly elongated. 21. 



11. Fruit hairy, breaking away without a stalk. 12. 

 Fruit glabrous. 17. 



12. Fruit with dry flesh, splitting. (Almond). 14. 

 Fruit succulent. (Peach). 13. 



13. Flowers single. 

 Flowers double. 



14. Tree, with green or red twigs. 

 Shrubs. 15. 



15. Bud-scales ciliate: leaves broad. 

 Bud-scales not ciliate : leaves narrow. 16. 



16. Flowers single. 

 Flowers double. 



17. Fruit breaking from stalk. (Nectarine). 



P. Persica. 



P. Persica plena. 



P. communis. 



P. triloba. 



P. japonica. 

 P. japonica plena. 

 P. Persica laevis. 



Fruit with stalk: stone smooth. (Cherries). 18. 



18. Leaves whitish, revolute : twigs often red. 19. 

 Leaves green, not revolute. 20. 



19. Leaves ascending. P. pumila. 

 Leaves spreading. P. Besseyi. 



