452. THE STRUCTURE OF ECONOMIC PLANTS 



usually a compound umbel with secondary divisions known as 

 umbellets. The fruit is also characteristic and is called a schizo- 

 carp. It is composed of two dry carpels or mericarps which cohere 



Fig. 2.30. Mature plant at time ol flowering showing floral axes and umbels. (Courtesy 



of Ferry-Morse Seed Co.) 



by their inner faces during maturation, but separate when ripe, each 

 being suspended from its summit by a branch of the slender forked 

 carpophore. 



Celery is an important salad crop and is grown throughout the 

 United States, especially in New York, Michigan, Oregon, Califor- 



