924 



THE BOOK OF GARDENING. 



Aquatic, with tufts of soft, delicate, pale-green leaves, which are 

 joined together at the base in the shape of a rosette. The 

 flowers are insignificant, and are borne in little rosettes at the 

 base of the leaves. This plant should be afforded slight 

 shade from direct sunlight, or it will assume an unhealthy 

 appearance. It increases freely by offsets, and where it thrives 

 will soon outgrow its allotted space. 



^ Sagittaria lancifolia is an erect-growing Aquatic, with pure 

 white flowers arranged in whorls on tall scapes. The plant is 



Fig. 612. — Sagittaria montevidensis. 



of vigorous habit, with lanceolate-ovate leaves borne on long 

 petioles. Height 3ft. to 4ft. 5. /. angustifolia has the leaves much 

 narrower and less distinctly ribbed, and is smaller in all its parts 

 than the type. 5. montevidensis (Monte Video Arrow-head) (Fig. 

 612) is by far the handsomest species of the genus yet introduced, 



