180 Trans. Acad. Sci. of St. Louis. 



Those who prefer Eragrostis to this genus may call this 

 Eragrostis Weigeltiaiia (Reichenb.) Bush. 



Specimens examined : — 



Surinam: No locality, Weigelt, 1827. 



Mexico: Matamoros, Berlandier 2325, date of collection 

 not given, Gregg 911, June 6, 1847; Reynolds, Gregg 889, 

 June 6, 1847; no locality, Berlandier 1949, date of collec- 

 tion not given. 



Bolivia: Guanai, Rusby 230, May 1886. 



Texas: Brazos Bottom, Lindheimer 213, 214, 111, Au- 

 gust, 1843 ; no locality, Berlandier 89^, date of collection not 

 given; Aransas Bay, Berlandier 559, date of collection not 

 given; no locality, Wright 2045, date of collection not given; 

 Corpus Christi, Heller 1455, March 14-21, 1894; Columbia, 

 Brazoria County, Bushlb^, 159A, April 14, 1899; 265, 

 October 26, 1899; 199, 199A, May 3, 1900; 1306, 1307, 

 October 5, 1900; 1669, October 6, 1900; Graham, Rever- 

 chon 3500, October 29, 1902; Dallas, Reverchon 3499, 

 October 24, 1902. 



Arkansas: Fulton, Hempstead County, Bush 997, Sep- 

 tember 20, 1900; 1038, September 22, 1900. 



Kansas : Chautauqua County, Hitchcock 932A, 1896, 

 pistillate plant. 



Nebraska: Lincoln, Webber, July 7, 1887, an unusually 

 slender form with fewer spikelets in the clusters than in 

 typical forms. 



2. Nebraqrostis hypnoidbs (Lam.) B. F. Bush. 

 Foa hypnoides Lam. Tabl. Eacycl. 1 : 185 (1791). 

 Poa reptans Michx. Fl. Bor. Am. 1 :69. t. 11 (1803). 

 Eragrostis reptans (Michx.) Nees in Mart. Fl. Bras. 2 : 514 (1829). 

 Eragrostis hypnoides (Lam.) B. S. P. Prel. Cat. N. Y. 69 (1888). 

 Megastachya hypnoides Pal. de Beauvais, Essai d'une nouv. agrosto- 



graphie 74 (1812). 

 Megastachya reptans Pal. de Bauvais, Essai d'une nouv . agrostographie 

 74 (1812). 



Culms creeping and rooting, 3-5 cm. long, much branched, 

 the branches erect or ascending, 3-15 cm. high ; sheaths villous 



