ALTAMAHA GRIT REGION OF GEORGIA 283 



S. Floridanus Britton; Nash, Bull. Torrey Club 22 : 161. 1895. 

 "Water Grass." 



A common weed in cultivated fields, around dwellings, etc., 

 nearly always on Columbia sand. Now pretty well distrib- 

 uted through the pine-barren region of Georgia, and inland 

 at least as far as Houston County, but how and when it first 

 appeared in the state, probably no one knows. It is 

 scarcely visible before the middle of June, but after that 

 it comes up rapidly, and flowers in July and August. 



Otherwise known only from Florida. Certainly not indige- 

 nous in Georgia, and natural range and habitat still un- 

 known. See Bull. Torrey Club 28 : 467. 1901. 



S. ciliatifolius (Ell.) Mohr, Bull. Torrey Club 24 122. 1897. 

 Sand-hills chiefly, bulloch {973), tattnall, Montgomery, 



DODGE, COFFEE (6g6) , IRWIN, BERRIEN, COLQUITT. Fl. 



July-Sept. Also on the fall -line sand-hills (A. Cuthbert) 

 and in the Lower Oligocene region. Less frequent coastward. 

 North Carolina to Florida and Texas in the coastal plain, 

 mostly in the pine-barrens. 



FIMBRISTYLIS Vahl, Enum. 2 : 285. 1806. 

 F. autumnalis (L.) R. & S., Syst. 2 : 97. 181 7. 



Trichelostylis autumnalis Chapm., Fl. 522. i860. 



Low grounds and swamps ; apparently usually a weed, cof- 

 fee, irwin, colquitt. Fl. summer. Pretty well scattered 

 over the state; probably indigenous in Middle Georgia if 

 anywhere. 



Throughout the Eastern United States and tropical America, 

 but natural range and habitat not fully understood. 

 F. laxa Vahl, Enum. 2 : 292. 1806. 



In a ditch in Moultrie, Aug. 22, 1903. Occurs in similar 

 situations in Americus and Leslie, Sumter County, and on 

 moist rocks in Middle Georgia, where it may be indigenous. 



Pennsylvania to Missouri, Florida, and Texas. Also in the 

 tropics. 



F. puberula (Mx.) Vahl, Enum. 2 : 289. 1806. 



Chiefly in intermediate pine-barrens ; not abundant, bulloch 



