YUCCA. 389 



Gerarde kept the plant till his death ; Parkinson had it 

 from the widow, and with him it perished. 



The Yucca is nearly allied to the Aloe, and, like that, 

 blows very rarely: the flowers of this species are bell- 

 shaped, and hang downward ; they are white within, but 

 on the outside each petal has a stripe of purple ; they 

 appear in August and September. 



The Aloe-leaved Yucca is a native of South America : 

 it produces a greater abundance of flowers than the for- 

 mer kind ; white on the inside, purple without. 



The Drooping-leaved Yucca has white flowers, but its 

 scent is not agreeable. 



The Thready Yucca, s"o called from long threads 

 which hang from the sides of the leaves, is a native of 

 North America. The flower-stem of this plant grows to 

 the height of five or six feet, and nearly the whole of it is 

 covered with large white flowers, sitting close. But, like 

 the other kinds, this plant flowers but seldom. 



It is said that, about the middle of the seventeenth cen- 

 tury, Mr. Walker possessed abundance of these plants in 

 his suburban garden in the village of St. James. tl But," 

 says Mr. Morison, who mentions the circumstance, " I 

 never saw it flower there." 



These plants are to be treated as hardy Aloes. 



ZINNIA. 



CORYMBIFER-K. SYNGENESIA POLYGAMIA SUPERFLUA. 



So named by Linnaeus, in honour of J. G. Zinn, pupil of Haller, and 

 professor of botany at Gottingen after him. 



THE Zinnias are annual plants, bearing handsome 

 flowers : they are usually raised in a hot-bed ; but a warm 

 inhabited room will generally bring them forward as well. 



