144 



NAIADACE.E. 



[ Endogens. 



Common in extra-tropical countries, cither inhabiting fresh water, or the shores of the 

 ocean, but also found near the equator. 

 Their uses are unknown. 



GENERA. 



Caulinia, Willd. 



Itinera, (linel. 

 Najas. Willd. 



Fluvialis, Michel. 



Phyllospadix, Hook. 

 Zannichellia, Michel. 

 Libra, H.h.K. 

 HeUrostplus, Hook. 



Tetronciurn, W. 



Cathanthcs, Kich. 

 Halodule, Endl. 



Diplanthera, Thouars. 



Althenia, Petit. 

 Be.llevalia, Delil 



Position. 



Numbers. Gen. 9. Sp. 16. 



Juncaginacea. 

 -llvdrocharidacese Naiadace-e. — Zosteraeeae. 



Tliullofjcns. 







