A. 



Sepals and petals 3-5. Disk annular, within the stamens, or of glands 

 alternating with the petals. Stamens definite. Carpels free or 

 coml^ined. 



Stamens free. Flowers perfect. 1- 



Stamens free. Flowers imperfect. 2. 



Stamens connate. Flowers perfect. 3. 



1 Fruit of 3-10 drupes. Anthers opening by 



pores at apex. Stamens many. XLI Ochxacejc. 



1 Fruit a drupe. Stamens 8-12. ' XLII Burserace^. 



1 Fruit a capsule or berry. Stamens 2-10. XXXIX Rutaoe^. 



1 Fruit a samara. Stamens 10. XXXVI MALriGHiACEiE. 



1 Fruit a thorny capsule. Stamens 10. XXXVII ZYGOPHYLLEiE. 



2 Fruit a capsule or berry. XXXIX Rutace^e. 



2 Fruit a drupe. XLII Burserace^. 



3 Filaments connate at base only. Ovary 



entire. " XXXIV LiKEiE. 



3 Filaments connate at base only, or polyadel- 

 phous. Ovary lobed. XXXVIII GERA>-iACEiE. 



3 Filaments connate their whole length. Anthers 



sessile. XLIII MELiACEiE. 



B. 



Flowers regular. Calyx small. Petals if present often valvate. Disk 

 cup-shaped or glandular. Stamens definite. Ovary 1-celled, with 

 1-3-0 vules pendulous from a central placenta, or 2-or more celled 

 with 1-2-ovules pendulous from the top of each cell. Leaves 

 usually stipulate. 



Disk annular or 4-5-lobed. Ovary 1-3-celled. XLV Olacineji:. 



Disk none. Ovary 4-6-, rarely 7-'8-celled. XL VI Ilicinea:. 



C. 



Flowers regular or irregular, small, usually perfect. Sepals and petals 

 4-5. Disk cushion-like, and adnate to base of calyx. Stamens 

 definite, on margin or base of disk. Ovar}^ 2-or more celled, free 

 or immersed in the disk. Ovules 1-2, erect, rarely 3-6, on inner 

 angle of ceUs. 



Stamens alternate with petals. XL VII Celastrineje. 



Stamens opposite petals. Leaves simple. Style 



2-4-fid. XLIX RHAMNEiE. 



Stamens opposite petals. Leaves simple or com- 

 pound. Style conical, short, subulate or none. L Ampelide.e. 



Flowers regular or irregular, usually unisexual. Disk adnate to base 

 of calyx. Stamens definite or indefinite, inserted upon, or within 

 the disk. Ovary 1-or more celled, ovules 1-2 in each cell. Leaves 

 often compound. 



