144 



NAIADACEtE. 



[Endogexs. 



Common in extra-ti'opical countries, either inhabiting fresh water, or the shores of the 

 ocean, but also found near the equator, 

 Theu' uses are imknow-n. 



GENERA. 



Phyllospadix, Hook. I Tetroncium, W. Althenia, Petit. 



Zannichellia, Michel. Cathanthes, Rich. Bellevalia, Delil. 



Lila;a, iiT.JS.^. Halodule, -EhcZ^. EpigjTianthus, BiM?^. 



Heterostylus , Hook. I Biplanthera, Thouars. 



Numbers. Gen. 9. Sp. 16. 



Caulinia, Willd. 



Ittnera, Gmel. 

 Najas, Willd. 



Fluvialis, Michel 



Juncagiriacece. 

 Position. — Hydrocharidaceae — Naiadace>e. — Zosteracese. 

 Thalloyens. 



