250 GEOLOGICAL SURVEY OF NEW JERSEY. 
J. tenuis, Willd. 
In low grounds. Very common throughout the State. 
Var. secundus (Poir.), Engelm. 
Warren: Near Phillipsburg—Porter. Camden: Petty’s- 
Island—Burk. Gloucester :—Parker. 
J. dichotomus, Ell. 
Moist, sandy soil. Monmouth: Sandy Hook—Britton; and: 
frequent southward on the Yellow Drift. 
J. Greenii, Oakes & Tuck. 
Middlesex: Burts’ Creek and Sayreville, and Sussex: On the- 
summit of High Point—Britton. 
J. pelocarpus, E. Meyer. 
Morris: On an island in Lake Hopatcong—Porter. Middle-— 
sex: Sayreville—Britton. Camden: Longacoming—C. E. 
Smith; and frequent in the pine barrens. 
Vor. fluitans (Michx.), B.S. P. (Var.? subtilis, Engelm.) 
Morris: Halsey’s Island, Lake Hopatcong—Porter. 
J. aRTIcULATUuS, L. 
Camden: Petty’s Island—E. Diffenbaugh. Fugitive from 
Europe. 
J. militaris, Bigel. : 
In streams and ponds, Warren: Sunfish Pond, Kittatinny: 
Mt., near the Delaware Water Gap—Britton. Ocean: In Toms 
River and branches—Parker, Martindale; Manchester—Knies- 
kern. Burlington: Wading River—Gray in Torrey Herb. ; 
Atsion River and in pond near Atsion—Parker. Atlantic: 
Near Cedar Lake—C. A. Gross; in Egg Harbor River at Mays 
Landing—B. Heritage. Cape May: In a pond near Seaville—. 
Commons. 
J. acuminatus, Michx. (J. acwminatus, Michx., var. legitimus, Engelm.). 
In low grounds. Common throughout the State. Frequently: 
proliferous. 
Var. debilis (Gray), Engelm. 
Cumberland: Haleyville; Burlington : Atsion ; Cape May = 
Dennisville—Parker. Essex: Werona—Rusby. 
