GARDEN FLOWERS. 269 



N. physaloides (physalis-like) ; hardy annual ; 4 feet ; flowers 

 blue and white, in July ; Peru ; 1759. 



NICOTIANA. Tobacco. [Solanaceas.] An extensive genus, 

 the species mostly hardy annuals. The most interesting is 

 the N. Tabacum, or Virginia tobacco, of which several varie- 

 ties, all having rose-colored flowers, are pretty enough to be 

 introduced sparingly into large miscellaneous flower-borders : 

 they grow from three to six feet high, according to the soil 

 and climate. N. Langsdorffii, with green flowers and blue 

 anthers, is rather pretty. Of the common annual species, 

 the seeds may be scattered over the borders in May, and a 

 single plant left here and there where there is room for them. 

 The Virginian tobacco must be sown in a warm frame in 

 April, and treated like a half-hardy annual, being planted 

 out in May, to produce fine blooming plants. From the size 

 to which these plants grow, with their ample foliage, they 

 should always be planted singly. Seeds are produced in 

 abundance, by which they are increased. 



JV. Langsdorffii (Langsdorff's) ; hardy annual ; 3 feet ; flowers 

 green, in July; Chili; 1819. N. paniculata (panicled) ; hardy 

 annual; 3 feet ; flowers green, in July ; Peru; 1752. N. Persica 

 (Persian) ; half-hardy annual ; 2 feet ; flowers white and green, 

 in September; Persia; 1831. N. Tabacum (Virginian); half- 

 hardy annual; 4 feet; flowers pink, in July; America; 1570. N. 

 undttlata (wavy) ; half-hardy perennial, may be cultivated as an 

 annual ; 2 feet ; flowers white, in July; New South Wales ; 1800. 



NIEREMBERGIA. [Solanacese.] Pretty half-hardy herbs, 

 suitable for the flower-garden, and for small beds. Sandy 

 loam and peat. Propagated by cuttings in sand, during 

 summer. The plants must be wintered in a dry airy green- 

 house, with precaution against damp. They may be planted 

 out in May. 



N. calydna (large-calyxed) ; half-hardy perennial ; 6 inches ; 



