190 



SYSTEMATIC BOTANY. 



cabinet-making, the manufacture of furniture, etc. The 

 wood of the smaller White Walnut, or Butternut (J. 

 dnered), is lighter colored than that of the preceding. 

 The wood of the Shell-bark Hickories (Carya alba and C. 

 sulcata) is white, hard, tough, and used extensively in the 

 ! manufacture of agricultural implements, where great 

 strength is required. The fruits (Hickory-nuts) are found 

 in our markets, and exported to England. The Pecan-nut 



is furnished by a small tree (C oUvceformis) of the 

 Southern States. 



5. Rafflesiacess. This family comprises twenty or 

 more species, found in the Tropics, growing parasitically on 

 the stems and roots of Dicotyledons. The most remarka- 

 ble representative was discovered in 1818 in Sumatra, by 

 Dr. Arnold, and is called Rafflesia Arnoldi (Fig. 301). It 

 is parasitic on a woody climber, and produces the largest 

 flower known, which is three feet in diameter ; it has five 

 mottled-red petals. 



