380 GARDEN FLOWERS. 



thinned out for flowering. A succession may be sown a 

 month later than the first sowing, if it is required. 



X. annuum (annual) ; hardy annual ; 3 feet ; flowers purple or 

 white, in July ; south of Europe ; 1570. 



XEROPHYLLUM. [Melanthaceae.] A genus of pretty but 

 rare half-hardy plants, with spikes of white flowers resem- 

 bling Helonias. The foliage appears withered, whence the 

 name. Good garden soil. Propagated by seeds. 



X. setifolium (bristle-leaved) ; half-hardy perennial ; flowers 

 white, in June ; North America ; 1823. This plant is also known 

 as X. asphodeloides and X. tenax. 



XYLOSTEON. A subdivision of the Honeysuckle family 

 (Caprifoliaceae), including some of the shrubby Honeysuckles. 

 See LONICERA. 



XYRIS. Yellow-eyed Grass. [Xyridaceas.] A genus of 

 very pretty yellow flowers, of which one species is very com- 

 mon in open sandy or peat bogs. If cultivated in a mass, 

 the flower would be effective. Soil, peaty sand. Propa- 

 gated by seed. 



X. bulbosa (bulbous) ; hardy perennial ; 6 inches ; flowers yel- 

 low, all summer ; North America. X. Caroliniana (Carolinian); 

 hardy perennial ; 18 inches; flowers yellow, in August; North 

 America. X. fimbriata is a Southern species. 



