26 PICTURE OF ORGANIZED NATURE. 



(Anthericum ossifragum, A. calycinuni), the Garlic 

 (Allium schcenoprasum), &c. Their frequency, beauty 

 and variety increase towards the Tropical regions ; 

 and they themselves become shrubby and arboreous 

 in the Aloe, passing in that character to the Torrid 

 Zone. 



7. Of a less extension is the Order of Asparagus 

 plants. These increase towards the warmer climates, 

 in size, frequency, and beauty ; and assume in the 

 Torrid Zone the character of Palms, in the Dragon- 

 tree. 



8. The AroidetB begin in the cold climates (as in 

 Lapland), with the species Zostera and Calla ; gra- 

 dually passing over to the Torrid Zone, where the 

 Genera Draco7itium, Pathos, &c. are natives, and, 

 like the Orchidese of the Tropical regions, orna- 

 menting the stems of trees, as parasitical plants. 

 The fresh green of the Pothos-leaves corresponds 

 with the coloured flowers of the Orchidese. The 

 Sweet-smelling Rush (Acorus calamus L.), the Wake- 

 Robin (Arum maculatum), and the Ethiopian Arum 

 (Calla palustris), inhabit the middle of the Tempe- 

 rate Zone. 



9. The Lilies, and Liliaceous plants, are common 

 to the Torrid, and to the warmer half of the Tempe- 

 rate Zone, where they in part prove arboreous ; as 



