PLANTS OF SOUTHERN NEW JERSEY. 421 



RUMEX L.* 



Rumex verticillatus L. Swamp Dock. 



Rumex verticillatus Linnaeus, Sp. PI. 334. 1753 [Virginia]. — Knieskern 26. 

 — Britton 211. — Keller and Brown 128. 



Damp shaded spots throughout the State, except in the Pine 

 Barrens, apparently not common. 

 Fr. — Early June to early August. 



Middle Distict.—UtdiorA (S), Salem (H). 



Coast Strip. — Piermont (S), Wildwood, Holly Beach. 



Cape May. — Nummejlown (S), Green Creek (OHB). 



Rumex hastatulus Bald. Engelmann's Sorrel. 



Rumex hastatulus Baldwin, Elliot, Fl., S. C. and Ga. II., p. 416, 1821 

 [Georgia and E. Florida] — Crawford, Bartonia I. 18. 1909. 



Known only from the sand hills at Longport, where it was 

 discovered in August, 1890, by IMr. Charles E. Smith, and later 

 reported by Messrs. Joseph Crawford and Stewardson Brown, 

 who found it in abundance June 23, 1907. 



Fr. — ilVLid-June to late August. 



Coast Strip. — Longport. 



POLYGONUM L.f 



Polygonum emersum (Michx.). Swamp Smartweed. 



Polygonum amphibium var. emersum Michaux, Fl. Bor. Am. I. 240. 1803 



[Banks of the Ohio]. 

 Polygonum coccineum Barton, Fl. Phila. I. 188. 1818. 

 Polygonum emersum Britton 209. — Keller and Brown 130. 



Borders of swamps and ditches; frequent in the northern 

 counties and south to about the center of the Middle district, 

 reappearing in the southern part of the Cape May peninsula. 



Fr. — Late August to late September. 



Middle District.— M.\ck\tion (NB), Repaupo. 

 Pine Barrens. — Ancora (Bassett). Native? 

 Cape May. — Bennett. 



* Knieskern's record of "R- maritimus salt marshes of Ocean and Mon- 

 mouth counties, not rare," has not been verified; both it and the records of 

 R. brittanica for Anglesea (KB) are probably referable to R. verticillatus. 



t For studies of this genus cf. Robinson, Rhodora, April, 1902, p. 6z, Small, 

 Torrey Bulletin XX. 214, XXI. 168, XXI. 476. 



