50 Fresh Water Aquarium 



they should be given ample space so that 

 they can spread without too much crowding. 

 They are equally valuable and ornamental 

 during all seasons and grow well in warm 

 and cold water. In an aquarium with 

 abundant light, the runners of the Valisneria 

 will grow close to the bottom, whereas in a 

 darker position they will grow more or less 

 upright to reach the light as quickly as pos- 

 sible. Valisneria is found wild in rivers, 

 canals and shallow lakes in the eastern parts 

 of the United States. 



Waterviolet or Waterfeather {Hottonia pa- 

 histris). This is a very graceful plant with 

 light green, deeply laciniated leaves placed 

 in whorls around the stem. The ornamen- 

 tal, white flowers appear in summer grow- 

 ing straight upright out of the water. The 

 plant itself is rather brittle and delicate, and 

 to be at its best, should have sandy loam for 

 a bottom. Hottonia can be propagated from 

 seed, or so-called winter-buds, a form of 

 much condensed branches which grow dur- 



