in Extra- Tropical Countries. 231 



Neurachne Mitchelliana, Nees. 



The Mulga-Grass. In the arid interior of Eastern and South- 

 Eastern Australia. With its companion, N. Munroi (F. v. M.) 

 eligible as a perennial fodder-grass for naturalization in sandy or dry- 

 sterile land. It endures any extent of drought, but requires heavy 

 rain to start anew (R. S. Moore). 



Nicotiana glauca, Graham. 



Argentina and Uruguay. This quickly-growing arborescent species 

 can be raised on mere sand on the coast, as one of the best of plants 

 to establish shelter and stay the shifting of the sand- waves. 



Nicotiana multivalvis, Lindley. 



The native Tobacco of the regions on the Columbia-River. An 

 annual. This can be utilized for some inferior kinds of tobacco. 



Nicotiana Persica, Lindley. 



The Shiraz-Tobacco. Persia. Annual. This can be brought to 

 perfection only in cool mountain-regions. The mode of culture is 

 somewhat different from that of the ordinary tobacco. Moderate irri- 

 gation is favorable. The plants, when ripe, are cut off and stuck 

 into the ground again until they become yellow; they are then heaped 

 together for a few days in the drying-house; they are afterwards 

 packed into thin strata and placed into bags for pressure and daily 

 turning. 



Nicotiana quadrivalvis, Pursh. 



The native Tobacco of the Missouri. An annual. 



Nicotiana repanda, Willdenow. 



Cuba, Mexico, Texas. Annual. It is utilized for some of the 

 Havanna-tobaccoes . 



Nicotiana rustica, Linne*. 



Tropical America. Annual. Some exceptional sorts of East- 

 Indian tobacco, of Manilla-tobacco and of Turkey-tobacco are derived 

 from this particular species. 



Nicotiana Tabacum, Linne".* 



The ordinary Tobacco-plant of Central America. Annual. The 

 tobacco-plant delights in rich forest-soil, particularly where limestone 

 prevails, on account also of the potassium-compounds, which abound 

 in soils of woodlands, and also because in forest-clearings that atmo- 

 spheric humidity prevails, which is needful for the best development 

 of the finest kinds of tobacco. Various districts, with various soils, 

 produce very different sorts of tobacco, particularly as far as flavor is 

 concerned; and again, various climatic conditions will greatly affect 

 the tobacco-plant in this respect. We can therefore not hope, to 

 produce for instance Manilla- or Havanna-tobacco in cooler latitudes; 

 but we may expect to produce good sorts of our own also in Australia, 

 more or less peculiar; or we may aspire to producing in our rich and 



