194 



GOLDFISH VARIETIES A:N^D 



no reason why it should not be better known. As will be noted in Figure 

 147 it propagates from runners, but the seeds also germinate under 

 favorable conditions. The plant is of European introduction. 



TRIANEA 



Trianea bogotensis is an attractive, small floating plant with thick, 

 heart-shaped leaves. It needs a moist warm atmosphere and not too 

 much direct sun. Under these conditions it thrives and is a valued 

 feature in the summer pool or greenhouse tank. It is not found locally 

 in temperate climate but may be had of dealers. 



WATER FERN 



Not looking particularly fern-like, the Water Fern, Ceratopteris 

 thalictroides, is the only truly aquatic species of the fern family. It is 

 of comparatively recent introduction into the aquarium and indoor pool, 



Fig. 148. Water Fern {Reduced) 



it being more suited to the latter. In a partially shaded position in the 

 greenhouse it grows into floating masses a foot or more in diameter, 

 piling up to some height on account of its peculiar means of reproduction, 



