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. artemisisefolia, 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. SPINOSUM, L. 



In waste places in the towns and villages ; frequent. Nat- 

 uralized from Tropical America. 



HBLIOPSIS, Pers. 

 Ox-eye. 



H. helianthoides (L.), B. S. P. (H. Isevis, 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. Ixvis, 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. 



