PUANTS OF SOUTHERN NEW JERSEY. 263 



Middle District. — Delanco. 



Pine Barrens. — Double Trouble, Quaker Bridge (C), Williamstown Jnc, 

 Inskip, Newtonville, Grassy Pond, Twelfth St. and Jackson Road, Egg Har- 

 bor City. 



Cape May. — Bennett, Whitesboro, Nummeytown (S), Rio Grande. 



Eleocharis tenuis (Willd.). Slender Spike-rush.* 



PI. XVII., Fig. 18. 



Scirpus tenuis Willdenow, Enum. Hort. Berol. I. y6. 1809 [North 



America]. 

 Scirpus filiformis Pursh Fl. Am. Sept. I. 54. 

 Eleocharis tennis Knieskern 34. — Torrey Ann. Lye. N. Y. III. 309. 1836. — 



Willis 68.— Brittdn 263. 



Damp places ; common throughout the State. 

 Fr.. — Early June to early July; scales then drop during July, 

 but achenes persist on the rachis often until October. 



Middle District. — New Egypt, Burlington, Delanco (S), Camden, Lawn- 

 side (S), Tomlinson's Glassboro (S), Swedesboro, Riddleton, Millville. 



Pine Barrens. — Allaire, Toms River, Forked River, Manahawkin, West 

 Creek, E. and W. Plains, Landisville, New Germany, Weymouth. 



Coast Strip. — Spray Beach (L). 



Cape ikfoy.— Cape May (OHB). 



Eleocharis tortilis (Link.). Twisted Spike-rush. 

 PI. XVII. Fig. 13. 

 Scirpus tortilis Link, Jahrb. III. 78. 1820 [North America]. 



Moist Open ground; rare and local in the southern Middle 

 district, but more common in the Cape May peninsula. Reaches 

 its northern limit in southern New Jersey. 



This interesting species easily recognized by its spirally twisted 

 stem, was first collected in the State by Mr. Chas. D. Lippincott, 

 September 6, 1896, near Swedesboro. 



Fr. — Early July to early September. 



Middle District. — Two miles north of Swedesboro. 



Cape May.— Dias Creek, West Cape May, Cold Spring (OHB). 



* Eleocharis intermedia Muhlenberg [Gram. 31. 1817— Pennsylvania] is 

 given in Britton's Catalogue as rare and local in Northern New Jersey. It 

 was recorded by Willis from Ocean and Monmouth Counties, but this record 

 has been rejected by Dr. Britton, and as Mr. Heritage's record in Keller 

 and Brown's Catalogue proves to be E. oUvacea, the species seems to have no 

 place in our list. 



