210 GEOLOGICAL SURVEY OF NEW JERSEY. 



P. aviculare, L. Door-weed. 



In house -yards, paths and waste places. Very common 

 throughout the State. 



P. erectum, L. (P. aviculare, L., var. erectum, Gray.) 



In similar situations. Common throughout the State. 



P. maritimum, L. 



Sandy sea-beaches; frequent. Certainly perennial at South 

 Amboy Britton . 



P. ratnosissimum, Michx. 



In salt meadows. Cape May : Near the light-house, and 

 Atlantic : Atlantic City Commons. Monmouth : Sandy Hook 

 Britton. Middlesex : Woodbridge Lighthipe. 



P. tenue, Michx. 



In dry soil. Atlantic : Landisville C. A. Gross. Glou- 

 cester : Mullica Hill Britton ; Mickleton, occasional B. Her- 

 itage. Camden : Martindale. Monmouth : Keyport R. W. 

 Brown ; and frequent on hills, middle and northern counties. 



P. arifolium, L. Scratch Grass. 



Low grounds. Common throughout the State. 



P. sagittatum, L. Tear-thumb. 



Low grounds. Common throughout the State. 



P. CONVOLVULUS, L. Black Bindweed. 



Waste and cultivated grounds ; frequent. Naturalized from 

 Europe. 



P. cilinode, Michx. 



" Mountains, north " Willis. Warren : Shore of the Dela- 

 ware below Phillipsburg Porter. Hunterdon : Bull's I&land 

 Best. 



P. dumetorum, L., var. scandens (L.), Gray. 



In low grounds. Rather common throughout the State. 



P. articulatum, L. Jointweed. 



In sandy sea-beaches, and on the sands of the Yellow Drift. 

 Middlesex : South Amboy Britton. Camden : Berlin Mar- 

 tindale. Gloucester: Woodbury Mrs. W. McGeorge; and 

 common in the pine barrens. 



