CATALOGUE OF PLANTS. 161 



Forma angnstifolia, 



Near Bar Harbor (F. M. Day) ; — Seal Cove Pond ; Eipples 

 Pond (Rand) ; — Somesville (R. & R.). 



S. graminea, Mx, 



Infrequent. Somes Stream (W. H. Dunbar, R. & R., Arnold 

 Greene); — Great Pond; Seal Cove Pond (Rand). 



NAIADACE^. PoNDWEED Family. 



TRIGLOCHIN, L. Arrow Grass. 

 T. maritima, L. 



Common in salt marshes, and on muddy coast shores. 



SCHEUCHZERIA, L. 

 S. palustris, L. 



Rare. Sunken Heath (Faxon, Rand); — The Heath, Great 

 Cranberry Isle (R. & R.). 



POTAMOGETON, L. Poxdweed. 



P. natans, L. 



Ponds and deep streams; frequent. Seal Cove Pond; Great 

 Pond (Rand); — Somes Pond (R. &, R.); — Northeast Creek; 

 Witch Hole (Redfield). 



P. Oakesianus, Robbins. 



Rare. Northeast Creek; Bubble Pond (R. & R.). 

 P. Pennsylvanicus, Cham. P. Claytonii, Tuck. 



Common in ponds, streams, and ditches. A very slender 

 deep-water form. Somes Pond (Rand). 



P. hybridus, Mx. P. diver si folius, Raf. 



Rare. Ripples Pond (Feruald, Rand). With and without 

 floating leaves. 



P. perfoliatus, L. 



Infrequent. Long Pond; Jordan Stream (Redfield) ; — North- 

 east Creek (E. Faxon, Rand, M. L. Fernald). 



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