• The castor oil plant produces castor oil through the processing of its seeds, which are inaccurately called beans. The castor oil plant is a member of the spurge family know as Euphorbiaceae. Many members of this plant family are used to make economically important products.
  
  

Cassava

• The cassava plant (Manihot esculenta), also known as yucca, is a relative of the castor oil plant. The roots of these plants are made into tapioca flour, amongst many other culinary uses. Cassava is a native plant of South America, and is one of the world's largest edible carbohydrate sources.
  
  

Para Rubber Tree

• The para rubber tree (Hevea brasiliensis), also known as the rubber plant, is a relative of the castor oil plant. The sap of the rubber plant produces latex, and is the world's primary source of natural rubber. The rubber tree grows in areas of high rainfall, including rainforests.
  
  

Poinsettia

• The poinsettia (Euphorbia pulcherrima) is also related to the castor oil plant. This plant is of economic importance as a popular Christmas decoration. It is native to Mexico, and was introduced to the United States in 1828. It is recognizable by its red and green foliage, which can also be orange or pink.