CATALOGUE OF PLANTS. 143 
AMBROSIA, L. 
Rag-weed. 
A. trifida, L. Great Rag-weed. Horse-weed. 
In low grounds. Rather common throughout the State. 
Var. integrifolia (Muhl.), T. & G. 
Camden : — Martindale. Hunterdon: Rosemont — Best. 
Salem: Woodstown—B. Heritage. 
A. artemisizfolia, L. Rag-weed. 
In fields and waste places. Very common throughout the 
State. 
XANTHIUM, L. 
Cocklebur. Clotbur. 
X. Canadense, Mill., var. echinatum (Murr.), Gray. (X. strumarium, 
L., var. echinatum, Gray.) 
In sandy soil. Frequent along the sea-beaches. 
X. STRUMARIUM, L. 
Occasional in waste places. Adventive from Europe. 
X. sprnosum, L. 
In waste places in the towns and villages; frequent. Nat- 
uralized from Tropical America. 
HELIOPSIS, Pers. 
Ox-eye. 
H. helianthoides (L.), B.S. P. (H. levis, Pers.) 
In fields and copses. Camden:—Parker. Monmouth and 
Ocean: Common—Knieskern. Burlington: Crosswicks Creek 
—Apgar; and frequent in the middle and northern counties. 
Specimens showing transition to the next were collected by Dr. 
G. N. Best, at Sergeantsville. 
H. scabra, Dunal. (H. levis, var. scabra, Gray.) 
Middlesex: South Amboy—T. F. Allen in Bull. Torr. Club, 
ii. 4. Warren: Delaware Water Gap—Parker; rare, and not 
recently collected. 
