PLANTS OF SO'UTHERN 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 Mav.— Cape May (OHB), Cold Spring. 



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



Potamogeton americanus Chamisso and Schlechtendahl, Linnsea 11. 226. 1827 



[Carolina]. 

 Potamogeton Auitans 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. Fl. 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 (Elberon?) (UP). 



Potamogeton confervoides Reichb. Alga-like Pondweed. 



Potamogeton confervoides Reichenbach, Ic. Fl. Germ, and He!v. VIL 13. 



1845 [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. heterophyllus 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. 



