KEY TO THE FAMILIES. 



A. Flowers complete, having a calyx and 

 corolla. 

 B. Corolla of distinct petals (polypetalous). 

 C. Corolla regular (petals similar in 

 size and shape). 

 D. Ovary superior, free from and 

 above the base of the calyx. 

 E. Ovary or' fruit solitary, simple, 

 containing 1 or more cells. 

 F. Calyx of 2 sepals. 



Petals 4; ovary quite super- 

 ior; stamens numerous 

 Petals 5; ovary half-superior; 

 stamens few or numerous ... 

 F. Calyx of 4-5 sepals or lobes. 

 Stamens numerous, united in 

 . bundles; petals 5; leaves 



opposite 



Stamens few, 2-10. 

 Trees or shrubs ; leaves 

 pinnate. 

 Shrubs; flowers bisexual; 

 petals 4; stamens 4. in- 

 side the disk 



Trees ; flowers unisexual ; 

 petals 5 ; stamens 10, 



outside the disk 



Herbs. 

 Leaves opposite ; sepals 

 and petals 5 ; stamens 



5-10 ... 



Leaves alternate or radical. 

 Leaves of 3 leaflets ; 

 petals 5 ; stamens 10 ; 

 fruit a 5-celled capsule 

 Leaves not of 3 leaflets ; 

 petals 4 ; stamens usu- 

 ally 6; fruit a pod ... 

 E. Ovary or fruit consisting of 

 several distinct carpels. 

 Stamens numerous. 

 Stamens united in a tube round 



the style; petals 5 



Stamens free ; petals 5. 



Stamens on the receptacle ; 

 fruit dry ; leaves without 

 itipules 



P.\l'AVER.\CEJi 2 

 POKTrr..\CACE.K 3 



HYPERICACE.E 11 



Sapind.\ce.e 14 

 Anacardiace.e 15 



Caeyophtllace^ 7 •'► 



oxalidace.e 12 

 Crucifer.e 4 ' 3-i, 



MALVACE.E 9 



Ranuncul.ace^ 1 



o 



