YAM, CHINESE. See DIOSCOREA BATATAS. 

 YARROW. See ACHILLEA. 



YELLOW-EYED GRASS. See XYRIS. 



YELLOW LILY. See HEMEROCALLIS. 



YELLOW POND-LILY. See NYMPILEA. 



YELLOW-ROOT. See XANTHORHIZA. 



YELLOW SULTAN. See CENTAUREA SUAVEOLENS. 



YEW. See TAXUS. 



YUCCA. Adam's Needle. [Liliaceae.] Fine exotic-looking 

 shrubs, some of them hardy ; others require some amount 

 of protection. They are aloe-like, with narrow leaves, some 

 growing up with an erect stem, which, in time, becomes 

 forked ; and others being almost stemless, the leaves grow- 

 ing close to the ground. The flowering stem in all is erect, 

 bearing a close panicle of large cream-colored, drooping, 

 tulip-like blossoms. They all grow in loamy soil, and the 

 hardy kinds have a fine effect planted sparingly in promi- 

 nent positions on rock-work. 



Y. aloifolia (aloe-leaved) ; half-hardy evergreen shrub ; 3 feet ; 

 flowers greenish-white, in August ; South America ; 1696. K an- 

 gustifolia (narrow-leaved) ; half-hardy evergreen shrub ; 2 feet ; 

 flowers greenish-white, in July; Missouri; 1811. Y. draconis 

 (dragon) ; half-hardy evergreen shrub ; 6 feet ; flowers white, in 

 August; South America ; 1732. Y.filamentosa (thready); hardy 

 evergreen shrub ; 2 feet ; flowers greenish-white, in September ; 

 Virginia ; 1675. Y. glaucescens (glaucous) ; half-hardy evergreen 

 perennial ; 2 feet ; flowers white, in July ; North America ; 1819. 



