ALTAMAHA GRIT REGION OF GEORGIA 193 



Virginia to Florida, Illinois, and Texas, mostly confined to the 



coastal plain. 

 Leaf-anatomy discussed by Kearney, Contr. U. S. Nat. Herb. 



5 :49 8 -499- I 9° I - 

 N. biflora Walt., Fl. Car. 253. 1788. "Black Gum." 



Common in ponds, branches, creeks, and small rivers, probably 



on every square mile of our territory. 

 Grows nearly all over South Georgia. Farther inland mostly 



replaced by N. sylvatica Marsh., with which it perhaps 



intergrades. (No distinction is made between them by the 



natives.) 

 New Jersey to Florida and Texas, mostly in the coastal plain. 



HALORAGIDACE^. 

 PROSPERPINACA L., Sp. PL 88. 1753. 

 P. palustris L., 1. c. 



Branch-swamps, etc. ; not common, emanuel, Montgomery, 

 colquitt. Fl. summer. 



Widely distributed in the Eastern United States and south- 

 ward. 

 P. pectinata Lam., Tab. 1 1214. pi. 50. f. 1. 1791. 



Branch-swamps and shallow ponds, bulloch {844), emanuel, 

 tattnall, coffee, irwin. Fl. May-Aug. Also in Sumter 

 County, in the Lower Oligocene region. 



Massachusetts to central Florida and Texas, in the coastal 

 plain. 



A form apparently intermediate between these two species 

 grows in moist pine-barrens and branch-swamps in bulloch, 

 coffee {1427), irwin (22 io), and berrien. See Bull. 

 Torrey Club. 33:238-239. 1906. 



MYRIOPHYLLUM L., Sp. PI. 992. 1753. 

 M. heterophyllum Mx., Fl. 2 : 191. 1803. 



Seen only in permanent ponds along the inland edge of our 

 territory, in screven (2084) and wilcox. Fl. spring and 

 summer. More frequent in sluggish streams in the upper- 

 third of the coastal plain. 



Range not well worked out, no doubt partly because of the.- 

 difficulty of accurately determining the species. 



