194 77z^ Horticulturisf s Rule- Book. 



Periods of Cultivation and Native Countries of Plants, continued. 



Eadish. Over 2,000 years ; temperate Asia. 



Eampion. Less than 2,000 years; temperate and southern 



Europe. 

 Eape. Over 4,000 years ; Europe, western Siberia (?). 

 Rice, Over 4,000 years ; India, southern China. 

 Rye. Over 2,000 yeai's; eastern temperate Europe(?), south. 



east of Europe, Algeria. 

 Salsify. Less than 2,000 years( ?) ; southeastern Europe, Algeria^ 

 Sea-Kale. Less than 2,000 years ; western temperate Europe. 

 Scorzonera. Less than 2,000 years ; southwestern Europe. 

 Shaddock. Over 2,000 years ; Pacific Islands. 

 Shallot. Less than 2,000 years ; unknown wild. 

 Spinach, Less than 2,000 years ; Persia( ?). 

 Sorghum. Over 4,000 years ; tropical Africa( ?). 

 Strawberry, Chile. Less than 300 years ; Chile. 

 Strawberry, Virginia. Less than 300 years; temperate N. 



America. 

 Sunflower. Very ancient ; U. S. 

 Sweet-Potato. Very ancient; tropical America. 

 Tomato. Over 500 years ; Peru. 



Turnip. Over 4,000 years ; Europe, western Siberia(?). 

 Watermelon. Over 4,000 years ; tropical Africa. 

 Wheat. Over 4,000 years ; region of the Euphrates. 



5- Statistics of the Vegetable Kingdom. 



There are 200 natural families or orders of flowering plants, 

 about 7,600 genera^ and about 100,000 species are known and de- 

 scribed. The flowerless plants are much more numerous than 

 the flowering plants, both in individuals and species. Ferns, 

 mosses, mushrooms and many smaller or even miscroscopic fungi, 

 lichens and sea-weeds are flowerless plants. 



The Ranunculacese or Crowfoot family includes over 1,200 

 species of plants, inhabiting all parts of the world. The clematis, 

 marsh-marigold or so-called cowslip, columbine, adonis, butter- 

 cup, Christmas rose, love-in-a-mist, larkspur, aconite and peony 

 are members of the Crowfoot famil5^ The family comprises 30 

 genera. 



There are about 100 species of clematis known. 



