194 7%<? Horticulturist's Rule- Book. 



Periods of Cultivation and Native Countries of Plants, continued. 

 Radish. Over 2,000 years ; temperate Asia. 



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

 Europe. 



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



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



Rye. Over 2,000 years; 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 family. The family comprises 30 

 genera. 



There are about 100 species of clematis known. 



