Aquarium Plants 99 



three small petals of a very light pinkish 

 color. 



Common Arrow-wort (Sagittaria sagittce- 

 folia) is found in swamps, ponds and ditches 

 all through the temperate zone. The leaves 

 of this plant vary greatly in shape. In deep 

 water long and narrow ribbon-like leaves 

 appear first, followed by others of spoon 

 shape, borne by a distinct stem, while late in 

 spring appear the characteristic arrowhead 

 shaped leaves. The triangular stalk bears 

 numerous flowers ; those nearest the top are 

 large, white and pollen-bearing, the lower 

 branches bearing pistillate or female flowers, 

 which are smaller and less conspicuous than 

 the males. While the Sagittaria appears to 

 be an annual, the old root develops runners 

 ending in a small bulb destined to propagate 

 the plant. 



Sagittaria sagittccfolia ftore pleno is a 

 beautiful variety with double flowers. 



The Chinese Arrow-wort (Sagittaria sinen- 

 sis) is even more beautiful and valuable than 



