LEADING FAMILIES OF FLOWERING PLANTS 359 



328. Useful products from other families ; foods and medi- 

 cines. Valuable products are obtained from many other fami- 

 lies of choripetalous dicotyledons besides those above described, 

 and a few of these may be mentioned in this place. 



Edible fruits. From the Saxifrage family we get currants 

 and gooseberries. From the Rue family are obtained the 



F 



FIG. 295. Flower and fruit of Parsley family (Umbelliferce) 



A-D, caraway (Carum Carvi): A, flower; B, partly matured pistil; C, mature 



fruit ; D, cross section of fruit. E, fruit of parsnip ; F, fruit of carrot, c, carpels ; 



cp, carpophore, or stalk to which ripe carpels are attached ; d, disk ; o, oil tubes; 



ov, ovary ; s, stigmas. A-D, after Schnizlein ; E, after Bischoff 



citrous fruits, including ordinary oranges, tangerines, man- 

 darins, lemons, and grapefruit. 



Of the Grape or Vine family only one genus, the grape, is 

 of economic importance, but it is an old and very important 

 cultivated plant. 



Chocolate and tea. Chocolate is manufactured from the seeds 

 of the cacao tree ; this tree was originally found in Mexico, 

 but is now cultivated in hot climates in many parts of the 



