GEASSES. 365 



Aristida niourii Nash, Bull. N. Y. Bot. Gard. 1 : 436. 1900. 



A glabrous perennial with very slender culms, leafy ouly toward the base, 1 to 2 

 feet high, erect; leaves 4, the lowermost sheath distant from the others which are 

 crowded and overlapping, the blades flat, erect, acuminate, 3 to 4 inches long, about 

 iV inch wide; racemes slender, long-exserted, 8 to 12 inches long, spikelets scattered, 

 about half as long as the internodes, the lowest sometimes very distant, appressed; 

 empty scales scabrous, equal in length, acute, 1-nerved; flowering scale shorter, its 

 awns hispidulous, widely spreading, flat and loosely spiral at the base. 



Louisiana area. Lower Pine belt. Sandy pine ridges, Mobile County. 



Related to A. ximpliciflora, from which it'is abundantly distinct. In that species 

 the spikelets are numerous and crowded, with their empty scales smaller, the first 

 scale strongly hispidulous and the lateral awns of the flowering scale more slender 

 than the central awn. 



Type locality: " Collected by Dr. Charles Mohr at Springhill, Mobile County, 

 October 4, 1886; * * * also secured at the same place by B. F. Bush, August 27, 

 1895." 



Herb. Geol. Surv. Herb. Mohr. 



Aristida stricta Michx. Fl. Bor. Am. 1 : 41. 1803. WIRE GRASS. 



Ell. Sk. 1 : 142. Gray, Man. ed. 6, 640. Chap. Fl. 555. Vasey, Contr. Nat. Herb. 3 : 45. 



Louisiauian area. Southern Virginia to Florida, Louisiana, and southern Arkansas. 



ALABAMA: Lower Pine region. Coast plain. Dry sandy pine barrens. Baldwin 

 County, Perdido Bay, Bon Secour. Abundant in the counties bordering upon west- 

 ern Florida, the so-called " wire grass counties." Escainbia County, Wilson Station. 

 Covingtou, Geneva, Henry, and Mobile counties. 



Type locality : " Hab. in Carolina inferiore." 



Herb. Geol. Surv. Herb. Mohr. 



Aristida spiciformis Ell. Sk. 1 : 141. 1817. SPIKE-FLOWERED ARISTIDA. 



Chap. Fl. 555. Vasey, Contr. Nat. Herb. 3 : 45. 



Louisianian area. Southern coast of North Carolina to Florida and Mississippi. 



ALABAMA: Coast plain. Low damp pine barrens, in close sandy soil. Mobile 

 County, Bayou Labatre. August to September. Not common. 



Type locality: "Wet pine barrens [South Carolina and Georgia]." 



Herb. Geol. Surv. Herb. Mohr. 



Aristida palustris (Chap.) Vasey, Contr. Nat. Herb. 3 : 45. 1892. SWAMP ARISTIDA. 



Aristida virgata palustris Chap. Fl. 555. 1860. 



Louisianian area. Florida to Mississippi. 



ALABAMA : Low wet pine barrens, so-called pine meadows. Mobile County, Dog 

 River flats. July to August; frequent. 



Type locality: "Margins of pine barren ponds, west Florida." 



Herb. Geol. Surv. Herb. Mohr. 



Aristida purpurasceiis Poir. Encycl. Suppl. 1 : 452. 1810. 



Gray, Man. ed. 6, 641. Chap. Fl. 555. Vasey, Contr. Nat. Herb. 3:46. Coulter, 

 Contr. Nat. Herb. 2 : 514. 



Carolinian and Louisianian areas. Southeastern Massachusetts, New York, New 

 Jersey to Florida, west to Texas, Arkansas, and southern Missouri. 



ALABAMA: Coosa hills to Coast plain. Dry gravelly or sandy soil. Calhoun 

 County, Annistou, 800 feet. Monroe County, Claiborue. Mobile County, Spring- 

 hill, Citronelle. Common throughout the dry pine barrens. August, October. 



Type locality : " Communiquce par M. Bosc, qui la recueillie dans la Caroline." 



Herb. Geol. Surv. Herb. Mohr. 



Aristida lanata Poir. Encycl. Suppl. 1 : 453. 1810. WOOLLY ARISTIDA. 



Aristida lanosa Muhl. Gram. 174. 1817. 



Ell. Sk. 1 : 143. Gray, Man. ed. 6, 641. Chap. Fl. 554. Coulter, Contr. Nat. Herb. 

 514. 



Carolinian and Louisianian areas. Delaware, Maryland, North Carolina, to 

 Florida, west to central Texas. 



ALABAMA: Coast plain to hills of the Coosa Valley. Dry gravelly or sandy soil. 

 Calhoun County, Anniston, 800 feet. Montgomery County. Monroe County, Clai- 

 borne. Mobile and Baldwin counties, scattered on the poorest sandy ridges. August 

 and September. 



Type locality: " Cette plante a 6t$ recueille par M. Bosc dans la Caroline." 



Herb. Geol. Surv. Herb. Mohr. 



