UMBELLIFERiE 



535 



In the outer flowers, the petals are often two-lobed. The 

 stylopodium is depressed or wanting, and has two curved 

 stigmas. 



Fruit and Seed. — The fruit (Fig. 219) is oblong and dor- 

 sally flattened. The five primary ridges of each carpel bear 

 long hairs, and each of the four secondary ridges bears 

 about ten long spines, at the ends of which are three or four 

 hooked hairs. The oil tubes (vittae) are solitary in the in- 

 tervals, that is, under the secondary ribs, and two are on the 

 commissural side of each mericarp. The seed is flattened 

 dorsally, and the face plane or slightly curved. 



Geographical. — The wild form of Daucus carota is a native of Europe and 

 Asia. It has become common throughout North America, in many places 

 proving a troublesome weed. All the cultivated forms of carrot are con- 

 sidered to be derived from this one wild form. 



Fig. 220. — Types of carrots (Daucus carota). A, Garden Ball; B, Early 

 Scarlet; C, Oxheart; D. Chantenay; E, True Danvers; F. Saint Vallery; G, 

 Long Orange. 



Varieties. — There are numerous varieties of carrots vary- 

 ing as to size, shape, color, and quality. As to shape of 



