27O GARDEN FLOWERS. 



flowers white, in July; Uraguay ; 1834. N. filicaulis (thread- 

 stemmed) ; half-hardy perennial ; 9 inches ; flowers white and 

 lilac, in July ; Buenos Ayres ; 1832. N. gracilis (slender) ; half- 

 hardy perennial ; 6 inches ; flowers white and lilac, in July ; Ura- 

 guay; 1831. N. intermedia (intermediate); half-hardy peren- 

 nial ; 9 inches ; flowers purple, black, and yellow, in July ; 

 Buenos Ayres ; 1832. 



NIGELLA. Fennel-flower, or Devil-in-a-bush. ' [Ranuncu- 

 laceae.] Hardy annuals, requiring only to be sown in the 

 open border in May, and the plants thinned to three or four 

 inches apart, six or eight being left in a patch. The flowers 

 have a singular form and curious appearance. 



N. aristata (awned) ; hardy annual ; 2 feet ; flowers blue, in 

 July ; Greece. N. coarctata (compressed) ; hardy annual ; 9 

 inches; flowers white, in July; south of Europe; 1793. N. 

 damascena (common); hardy annual ; 18 inches; flowers blue, 

 single or double, in June ; south of Europe ; 1570. N. Hispan- 

 ica (Spanish) ; hardy annual ; 18 inches ; flowers blue or white, 

 in June ; Spain; 1629. N. Orientalis (Eastern) ; hardy annual; 

 18 inches ; flowers yellow, in July; Syria ; 1699. 



NIGHTSHADE. See SOLANUM. 



NOLANA. [Nolanaceas.] Pretty annuals, of prostrate 

 trailing habit, with convolvulus-shaped blossoms. They 

 may be sown in the open ground in May ; or may be sown 

 in March, in pots for planting out, and the plants kept in a 

 cold frame till the middle of May. They will flourish in 

 good light garden soil, and are increased by seeds. 



N. atriplicifolia (atriplex-leaved) ; hardy annual ; 6 inches ; 

 flowers blue, white, and yellow, in July; Peru; 1834. N. 

 paradox a (violet) ; hardy annual ; 6 inches ; flowers blue, in 

 July; Chili; 1825. N. prostrata (prostrate); hardy annual; 

 6 inches ; flowers blue, in July ; Peru ; 1761. N. tenclla (slen- 

 der) ; hardy annual ; 6 inches ; flowers blue, in July ; Chili ; 

 1824. Variety subccerulea is a fine free-flowering variety, with 



