14 



anthelminthic. Several other species of Artemisia deserve 

 cultivation for medicinal purposes. Active principles : 

 Absinthin, an oily substance, indurating to a crystalline 

 mass ; a volatile oil peculiar to the species. 



Artemisia Dracunculus, L. 



The Tarragon or Estragon. North Asia. A perennial 

 herb, used as a condiment. Its flavour rests on two volatile 

 oils, one of them peculiar to the plant. 



Arundinaria falcata, Nees. 



ISTepaul. One of the hardiest kinds of the Bamboo tribe. It 

 rises to the height of 20 feet, the canes attaining a diameter 

 of 4 inches. 



Arundinaria macrosperma, Michaux. 



Southern States of North America, particularly on the 

 Missisippi. This Bamboo-like reed forms there the cane- 

 brakes. It requires to be replanted after flowering in the 

 course of years. Height 20 feet. 



Arundo Donax, L. 



The tall evergreen lasting Bamboo-reed of South Europe 

 and North Africa. It is one of the most important plants 

 of its class for quickly producing a peculiar scenic effect in 

 picturesque plantations, also for intercepting at once the 

 view to unsightly objects, and for giving early shelter. The 

 canes can be used for fishing-rods. 



Arundo Pliniana, Turr. 



On the Mediterranean and Adriatic Seas. A smaller plant 

 than A. Donax, with more slender stems and narrower 

 leaves, but similarly evergreen, and resembling the Donax 

 reed also in its roots. 



Arundo saccharoides, F. v. M. 



(Gfynerium saccharoides, Humboldt.) 



Northern parts of South America. This species is here not 

 yet introduced; but it is likely to prove hardy, Like the 

 following, it is conspicuously magnificent. 



