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CATALOGUE OF PLANTS. 209 
Porter. Burlington: Pemberton—Miss Willmarth. Atlantic: 
Egg Harbor City—Parker ; Hammonton—Bassett. Camden: 
“Winslow—Parker. Gloucester: Near Mickleton—B. Heritage. 
. Pennsylvanicum, L. 
Low grounds. Common throughout the State. 
. incarnatum, Ell. 
In low grounds. Bergen: Rutherfurd—Schuh. Sussex : 
Lake Grinnell—Britton. Camden: Banks of the Delaware— 
Martindale. 
. Persicaria, L. Lady’s Thumb. 
Waste places; common. Naturalized from Europe. 
. HypropireR, L. Water-pepper. 
Waste places; common. Naturalized from Europe. 
. acre, H. B. K. 
In swamps. Common throughout the State. 
. hydropiperoides, Michx. : 
In swamps. Frequent in the middle and southern counties ; 
apparently less abundant northward. 
. amphibium, L. 
.Sussex: Abundant in Morris Pond—Britton; in a railroad 
ditch near Lake Grinnell—Porter. Hunterdon :—Best. 
. Hartwrightii, Gray. 
Sussex: In a swamp along L. & H. R. R. R., between Lake 
Grinnell and Woodruff’s Gap—Porter & Britton, 1887. 
. emersum (Michx.), Britt. (P. amphibium, L., var. terrestre, Willd.) 
Borders of swamps. Bergen: Closter—Austin. Sussex: 
Morris Pond and near Woodruff’s Gap—Britton. Warren: 
Shore of the Delaware below Phillipsburg—Porter. Huater- 
don: Bull’s Island—Best. Morris: Along the Black River at 
Chester—Britton. Mercer: Meadows below Trenton—E. Volk. 
Gloucester: In meadows near Mickleton, becoming a nuisance 
—B. Heritage. 
. Virginianum, L. 
In damp woods. Gloucester: Two miles south of Mullica 
Hill—B. Heritage; and common in the middle and northern 
counties. 
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