AQUATIC PLANTS 



53 



in reality they are the toughest-leaved aquarium plant we know oi. 

 They are slow of growth and prefer a subdued light. Propagation is 

 by division at the root. This sometimes takes place in the aquarium, 

 but they do best in wooden tanks. At best they are slow growers, which 

 in a way is an advantage, for they eventually become rather large. The 

 Lace or Lattice-leaf plant is used for ornamental purposes, its qualities 

 as an oxygenator being negligible. Of recent years the commercial supply 

 has unfortunately almost disappeared. 



CRYPTOCORYNE 



This attractive aquarium plant is an importation from Europe. 

 Although introduced several years ago, it has never received the atten- 

 tion it seems to deserve. It is of an agreeable size and flourishes well in 

 a good light if not disturbed. Propagation principally by runners and 

 corms. The crown is at the surface of the sand. 



Fig. 38. Cryptocoryne (Half size) 



