Aquarium Plants 51 



ing the fall and, sinking to the bottom, de- 

 velop into new plants in spring. This plant 

 is found in ponds, pools and bogs in wooded 

 localities and begins to grow as soon as the 

 water is free from ice. 



Mudplant or Kidney-leaved Heteranthera 

 (Heteranthera reniformis). Although orig- 

 inally found in swamps, this plant should 

 have a place in every aquarium, regardless 

 of size or arrangement, as it grows remark- 

 ably well and is highly ornamental. The 

 leaves are elliptical or faintly kidney-shaped, 

 of a very pleasing yellowish green or light 

 olive color, forming dense masses after be- 

 ing well established. The ribs radiate from 

 the stem in a starlike pattern. This plant 

 grows freely from cuttings and lasts well 

 throughout the winter. This Heteranthera 

 is found in shallow rivers, ditches and 

 ponds, in the warmer parts of North Amer- 

 ica. 



Seagrass-leaved Heteranthera {Heteran- 

 thera zostercefolia), a variety from Brazil, is 



