EXTENSION OF THE VEGETABLE KINGDOM. 15 



mosses, ferns, &c., constitute peculiar Orders among 

 the Acotyledones ; the grasses, the grass- lilies, sword- 

 lilies, the lilies generally, asparagus, palms, &c., 

 among the Monocotyledones ; the leguminous, pod- 

 ded, and umbellated plants, &c. among the Dicoty- 

 ledones : each Order being subdivided into Genera, 

 each Genus into Species, and each Species displayed 

 in individual plants. Thus the whole vegetable king- 

 dom may be compared to a tree, dividing itself into 

 branches, twigs, and shoots. 



III. 



From remarks hitherto made, the most satisfactory 

 conclusions are drawn, that certain Orders are found 

 in the various portions of the globe, either exclu- 

 sively, or in particular. 



1. Although vegetation terminates on the line of 

 perpetual snow in Acotyledones of diminutive size, 

 they however appear in larger growth in temperate 

 and warm climes, and partly assume the shape of 

 more perfect plants, as is seen in the arboreous ferns. 



2. Monocotyledones are found of most luxuriant 

 growth and beauty, and in most frequent appearance, 

 towards the Torrid Zone ; impressing, at the level of 

 the sea, at the Equator, their character to the vege- 

 table world, in the palms. 



3. Dicotyledones are more proportionably spread 



