162 FLORA OF MOUNT DESERT. 



Var. lanceolatus, Robbins. Var. Iilchardso7iii, Bennett. 



Rare. Northwest Arm, Great Pond (M. L. Fernald). 

 P. pusillus, L. 



Rare. Northeast Creek (M. L. Fernald). 



RUPPIA, L. Ditch Grass. 

 R. maritima, L. 



Ponds and streams of brackish water along coast; common. 



ZOSTERA, L. Eel Grass. 

 Z. marina, L. 



Very common in shoal water along the coast. 



NAIAS, L. Naiad. 

 N. flexilis (Willd.), Rostk. & Schmidt. 

 Rare. Ripples Pond (Rand). 



ERIOCAULE^. PiPEwoRT Family. 



ERIOCAULON, L. Pipewort. 



E. septangulare, With. 



Common in ponds and along pond borders. Sometimes in 

 deep water, sending to the surface scapes six to ten feet in 

 length, as in Jordan Pond (R. & R.). 



CYPERACE^. Sedge Family. 



DULICHIUM, Pers. -- 



D. spathaceum (L.), Pers, 



Frequent on borders of ponds and streams. 



ELEOCHARIS, R. Br. Spike Rush. 



E. ovata (Roth), R. Br. E. obtusa, (Willd.), Schultes. 

 Uncommon. Muddy margins of mill-pond and of Somes 



Stream, Somesville ; bog-hole, High Head; stream near head of 

 Southwest Harbor (Rand). 



