238 



LXXVIII. NAIADEiE. [II. Monocotyledons 



952. Zostera nana, Roth. 



Dwarf Grass-wrack. 



953- Naias flexilis, Rostk. 



Slender Naiad, 



954. Naias marina, L. 



Holly-leaved Naiad, 



955. Naias graminea, Del. 



Grassy Naiad. 



