GEOGRAPHICAL DISTRIBUTION. 233 



4. Eastern portion of North America : The character- 

 istic plants of this province are the Asters and Soli- 

 dagos. It is also remarkable for the paucity of TJmhelli- 

 ferce and Cruciferm, as compared with corresponding regions 

 in the Eastern Hemisphere, and the absence of Heaths. 

 Among the cultivated plants, Maize holds a prominent 

 place. Some of the valuable timber trees are the Oaks, 

 Hickories, Maples, Pines, Hemlock, Spruce, etc. 



5. Western North America down to 86° North Latitude : 

 It is characterized by the grandeur of its Timber Trees ; 

 as the Sequoia and other Coniferce, among which may be 

 mentioned Abies balsamea, A. grandie, A. alba, A. Cana- 

 dends, A. Douglasii, and Pinus ponderbsa, P. Lambertiana. 

 It has very brilliant flowers, as the EschschoUzia, (Jlarkia, 

 Nemophila, etc. 



6. Southern region of North America: It is the region 

 of Magnolias ; also characterized by the paucity ot Labir 

 ake and Caryophyllacece. In it are found the Tulip-tree, 

 the Pitch Pine, Cacti, Venus's Fly-trap, Nelumbium luteum, 

 Tillandsia usneoides, etc. 



7. Warm temperate region of Eastern Asia (including 

 Japan), from the thirtieth parallel northward : Its charac- 

 teristic groups are the Ternstrcemiaceae and Celas- 

 tracese. In this province are also found the Tea-plant 

 {Camellia chinensis), Citrus, Lonieera, and other Capri- 

 foliacecB, etc. 



8. India, Ceylon, and Southeastern Asia : The Zinzi- 

 beraceae are characteristic plants. There are, besides, 

 many Leguminosce, Cueurbitaeece, and Tiliaeeas. Other 

 important plants are the Cinnamon, Clove, Indigo, Cotton, 

 Pepper, Teak, Bamboo, etc. 



9. Tropical Africa: The families having most repre- 



