216 
-GEOLOGICAL SURVEY OF NEW JERSEY. 
URTICACE. 
ULMUS, L. 
Elm. 
U. fulva, Michx. Slippery Elm. 
In low woods. Camden: Clementon—H. A. Green. Mon- 
mouth and Mercer: Not common—Willis. Union: Plainfield 
—Tweedy. “Hunterdon: Frequent—Best. Hudson: Hobo- 
ken—Leggett; and frequent in the northern counties. 
U. Americana, L. Common Elm, 
In low grounds, particularly along rivers. Salem: Near 
Salem—Dr. J. B. Potter. Gloucester: Quite common along’ 
streams near Mickleton—B. Heritage. Camden: Occasional 
near Atco—H. A. Green ; along the Delaware—Parker. Mon- 
mouth and Ocean: Rather rare—Knieskern; and common in 
the middle and northern counties. 
U. racemosa, Thomas. Corky Elm. 
Sussex: Along L. & H. R. R. R. above Woodruff’s Gap, a 
single tree observed—Porter & Britton, 1887. 
CELTIS, L. 
Hackberry. Bastard Elm. Juniper Tree. 
C. occidentalis, L. 
Var. 
Bergen: Closter, scarce—Austin; Weehawken — Leggett ; 
Palisades—Britton. Passaic: Midvale and Ringwood—Britton. 
Sussex: Newton—Hollick; Franklin Furnace—Britton. Hun- 
terdon: Milford—Porter ; and frequent in low grounds, middle 
and southern counties, though not very abundant in the pine 
barrens. 
pumila (Pursh), Gray. 
Essex: Montclair, 1879— Rusby. Hunterdon: Rosemont, 
rare—Best. Gloucester: Bank of Mantua Creek, half a mile 
west of Berkley—B. Heritage. 
HUMULUS, L. 
Hop. 
H. Lurvuyus, L. 
In thickets. Warren: Belvidere, apparently native— Miss 
M. E. Campbell; near Washington—Parker. Hunterdon: In 
