KEY TO FAMILIES XXIU 



Anthers not dehiscing by valves. 

 Flowers hermaphrodite. 

 Leaves simple. 

 Leaves opposite. 

 Parasitic plants : 11, 

 Plants not parasites. 

 Perianth petaloid (involucre simulating a calyx) with basal 



portion enclosing and adhering to fruit : 17 (Mirabilis). 

 Sepals 2, Fruit a capsule : 20. 

 Sepals 5. Fruit a capsule : 22. 

 Calyx 4-lobed. Fruit 4 foUicles : 34. 

 Leaves alternate. 

 Aquatic plants with peltate leaves : 23. 



Leaves lobed (in Cruciferm sometimes simulating a compound 

 leaf). 

 Stamens numerous. 

 Fruit a head of achenes : 25. 

 Fruit a capsule : 30. 

 Stamens 6, tetradynamous : 32. 

 Leaves entire. 

 Fruit a drupe. 

 Leaves without stipules : 10. 

 Leaves with stipules : 37. 

 Fruit not drupaceous. 



Stipules ochreate : 14 [Bumex). 

 Stipules not ochreate. 

 Calyx-segments 5, enlarged in fruit : 18 (Stegnosperma). 

 Sepals 2. Fruit a capsule : 20. 



Sepals 2. Fruit a utricle enclosed in the perianth : 21. 

 Sepals 3: 27. 

 Sepals 4 : 31. 

 Leaves compound. 

 Leaves digitate. 



Sepals 4 : 31. '' 



Sepals 7 or 8 : 33. 

 Leaves pinnate. 

 Ehachis winged : 36. 

 Rhachis not winged. 



Leaves 2-3 pinnate : 33a. 

 Leaves simply pinnate. 

 Fruit a head of achenes : 25. 

 Fruit 4 follicles : 34, • 



Fruit-achenes on or enclosed in the receptacle ; 37. 

 Fruit a solitary follicle : 38. . 

 Flowers unisexual. 

 Parasitic shrubs : 11. 

 Plants not parasites. 

 Leaves simple : 26. 

 Leaves compound : 36. 



