40 FARM FRIENDS AND FARM FOES 



Horse Nettle, also, this plant belongs to the same genus as 

 the potato, the flowers resembling those of this common 

 vegetable in shape, although they are yellow in color. It 

 is an extremely spiny plant, more so than the Horse Nettle, 

 and its fruit develops into spinose burs, inside which are 

 numerous small black seeds. These become attached to 



clothing or the hair of animals, and 

 are thus disseminated, although the 

 whole plant is sometimes blown 

 from place to place, carrying the 

 seeds with it. 



The Buffalo Bur may be kept 

 down, if seeding is prevented, either 

 by mowing or cultivation. 



Nearly a score of species of 

 Ground Cherries, of the genus Phys- 

 alis, are found in North America. 

 All are readily recognized by the 

 curious berry-like fruit inclosed in 

 the inflated bell-shaped calyx that 

 forms a pod-like covering. The 

 foliage resembles that of the to- 

 mato. One of the most abundant 

 sorts is called the Husk Tomato, or Strawberry Tomato, 

 and is grown as an edible fruit. 



These Ground Cherries are readily kept in check in a 

 well-tilled garden. Most of them are annuals, though at 

 least one is a perennial. 



GROUND CHERRY OR 

 PHYSALIS 



WEEDS OF OTHER FAMILIES 



Many years ago, perhaps in the days of Pocahontas, 

 a weedy plant appeared in the gardens of Jamestown, 



