PLANTS OF SOUTHERN NEW JERSEY. 163 



Ponds and streams throughout the State, the commonest large- 

 leaved Pondweed of our region. 

 Fr. — Late June to early September. 



Middle District. — Farmingdale, Vincentown (NB), Kirkwood (Bassett), 

 Paulsboro, Buckshutem, Swedesboro. 

 Pine Barrens. — Bamber, Quaker Bridge, Clementon. 



Coast Strip. — Long Branch, Manasquan (NB), Forked River, Manahawkin. 

 Cape Mo3».— Cape May (OHB), Cold Spring. 



Potamogeton americanus Cham, and Schlecht.* Long-leaved Pondweed. 



Potamogeton americanus Chamisso and Schlechtendahl, Linnasa II. 226. 1827 



[Carolina]. 

 Potamogeton fluitans Pursh, Fl. Am. Sept. I. 120. 1814. — Britton 257. 

 Potamogeton lonchitis Keller and Brown 22. 



Northern counties and Middle district, not very common. 



Middle District. — New Egypt (NY), Repaupo, Swedesboro, Salem (C). 



Potamogeton perfoliatus L. Clasping-leaved Pondweed. 

 Potamogeton perfoliatus Linnaeus, Sp. PI. 126. 1753 [Europe]. — Britton 258. 



Reported as occurring in ponds throughout the State, but we 

 have no evidence of its presence in the Pine Barrens. 



Fr. — Well matured September 17. 



Middle District. — Westville. 



Coast Strip. — Bayhead (McKenzie), Island Heights Jnc, Silver Lake near 

 Belmar, Takanassee Lake (Elbcron?) (UP). 



Potamogeton confervoides Reichb. Alga-like Pondweed. 



Potamogeton confervoides Reichenbach, Ic. Fl. Germ, and Helv. VII. 13. 



184s [Allegheny Mts.]. — Keller and Brown 23. 

 Potamogeton tuckermani Willis 60. — Britton 258. 



Restricted to ponds and streams in the Pine Barrens and does 

 not occur in New Jersey north of our limits. 

 Fr. — Late June into September. 



Pine Barrens. — Toms River, Browns Mills, Bamber, Island Heights Jnc, 

 Forked River, Ten miles W. of Atlantic City, Absecon (P), Tuckerton, Atco, 

 Landisville (T), Malaga (P), Hammonton, Atsion (C), Pleasant Mills, 

 Spring Garden (UP). 



* P. heterophyUus Schreb. seems to be restricted to the northern part of the 

 State. One non-fruiting specimen from the Batsto river collected Sept. 14, 

 1861, by Wm. Wynne Wister, and now in the Philadelphia Academy her- 

 barium, has been referred to this species, but it cannot be identified with 

 certainty. 



