58 Fresh Water Aquarium 



waters, would revert to the typical wild 

 form. 



Swamp-growing False Loosestrife (Ludwigia 

 palustris). Of all the different varieties 

 only those enumerated here are of value to 

 the aquarist. Ludwigia palustris has 

 pointed, oval leaves of a bright green color, 

 shaded with a brownish pink wherever ex- 

 posed to the light. The leaves are placed 

 alternately along the stem. (See Fig. 25, 



page 35-) 



Ludwigia iniilertii is very much like the 

 above variety. The greatest difference is in 

 the longer leaves and in the more intense 

 color which, if exposed to the light, turns to 

 a deep red. The Ludwigias will not grow 

 well in a dark place. If they have not a gen- 

 erous amount of light the leaves will decay, 

 leaving the stems bare, and forming small 

 pale leaves only on the extreme points of the 

 plant. 



Ludwigia hirtella is found in rivers and 

 ponds all through the United States. Dur- 



