290 POACE.E. 



An erect perennial, 30-1 "20 cm. high, cuhn solid as in Maize. 

 Li<?uIo very sliort: bhuU's sniootii below, scabrid above, all cxct'pt- 

 ing 'I of tboni crowcU'd at the Itase of the culms, involute, rigid with 

 very long sleiuk'r points, the lower 10-70 cm. long. Panicle>; ter- 

 minal, exscrted. thin, 15-){0 cm. long, rays scattered, very slender 

 with elongated bases, the longest 3-5 em. long. Empty glumes 

 olive-green or brown, 1 -nerved, lirst lanceolate or awl-shaped, '2-3 

 mm. long, second ovatu-lanceolate, 3.5-5.5 nnn. long; lloral glume 

 1-nerved, acute. 15-4 mm. long; })alea oval, obtuse, as long as or 

 nearly as long as its glume. Grain spherical, shining, thick, coria- 

 ceous, nearly 2 mm. diam. 



Arkansas, /'. S. Dcpt. Af/ricuL; Minnesota, llulziiifjcr. 



New England, New York, Wisconsin, Minnesota, and south to 

 Texas. 



9. S. Floridanus Chapm. Fl. S. States, 550 (1860). 



An erect perennial, 00-lf.O cm. high. Ligule very short; blades 

 flat or condui)licate, sc.ibrous on the margins, those of sterile shoots 

 30-00 cm. long, those on the culm 3 in number, 8-20 cm. long, 3-3 

 mm. wide, holding their width well to the abrupt tip. Panicle 

 slightly exscrted, dill'use, 30-50 cm. long, rays ii'ostly in threes, the 

 longest 7-10 cm. long. Spikelets purplish, single at the ends of the 

 stiif rough hairlike pedicels; empty glumes obovate-lanceolate. 1- 

 nerved, first 3-5 mm. long, second 4-4.3 n^m. long; floral glume 1- 

 nerved, oval, scarcely acute when spread, 4 mm. long; palea oval, 

 obtuse, reaching as high as its glume, infolded on the back between 

 the 2 nerves. 



Florida. Curtiss 3378. 



Var. Curtissii Vasey, ined. 



Leaf-blades 1-2 mm. wide; panicle more slender, glumes lanceo- 

 late, first and second 4-5 mm. long, floral glume 3-3.5 mm. long. 



Florida, Curtiss. 



10. S. junceus (Michx.) Knnth, Rev. Gram. 1:68 (1835). 

 Agrostis jnncea Michx. Fl. Bor. Am. 1 : 52 (1803). Vilfa juncea 

 Trin. Unifll. 157 (1824). 



An erect rather slender, smooth perennial. 30-70 cm. high. 

 Sheaths about the length of the internodes; ligule very short; 



