PLANTS OF SOUTHERN NEW JERSEY. 775 



Swamps and river banks ; frequent in the northern counties 

 and down the coast to Cape May; less common in the Middle 

 district, mainly restricted to the vicinity of the Delaware River. 



The distribution of this plant is one of the most striking 

 examples of the extension of the range of certain boreal species 

 down both sides of the State, which are entirely absent from the 

 central portion. On the west it follows the river all the way to 

 Salem, never straying from its immediate vicinity except to 

 follow up some tributary, while on the east it is plentiful along 

 the narrow coastal strip and outlying- islands all the way to Cape 

 May and up the rivers to the head of tidewater. On the Dela- 

 ware we are accustomed to regard such occurrences as the result 

 of seed washed down fromi higher up, but no such theory will 

 answer for the coastal strip, and it may be that its presence there 

 is due to some earlier geological phenomenon. Certain it is that 

 the cold waters from melting glacial ice must have made favor- 

 able conditions for a boreal flora both along the Delaware and 

 the coast, but it is presumptuous, perhaps, to claim any direct 

 relationship between this and present plant distribution. 



Fl. — Mid-August to mid-September. 



Middle District. — Fish House, Kaighns Pt., Coopers Creek, Washington 

 Park, Center Square, Swedesboro, Pennsgrove, Salem (S). 



Coast Strip. — Toms River, Forked River, West Creek (S), Barnegat City 

 (L), Peahala (L), Absecon (S), Atlantic City (S), Crowleytown, Pleasant 

 Mills (T), B^esley's Pt. (S), Palermo, Seaville (S), Mays Landing, Sea 

 Isle City (S). 



Cape May. — Cold Spring (S). 



ARTEMISIA L, 



Artemisia caudata Michx. Wild Wormwood. 



Artemesia caudata Michaux, Fl. Bor. Am. II. 129. 1803 [Missouri River]. 

 — Nuttall, Gen. II. 144. 1818. — Knieskern 19. — Willis 34. — Britton 148. 

 — Keller and Brown 341. 



Reported locally fromi Middlesex to Cumberland counties in 

 the Middle district but apparently rare, as recent collectors have 

 not found it. It is frequent, however, about Manasquan and 

 Point Pleasant, and is reported from Sandy Hook. The state- 

 ments of Britton and of Keller and Brown, tO' the effect that it is 

 frequent in the Pine Barrens seem to be incorrect, as there are no 



