1918] 



The Grasses of Illinois 



369 



Figs. 189-192. — 189, S. michauxiana^ infloresccnee; 190, S. michmixiana, 

 spikelet; 191, D. spicata, inflorei-cence; 192, I), spicata, spikelct 



Spartina michauxiana Hitchc. 

 Slough Grass. Fresh Water Cord Grass (Figs. 189 and 190) 



Spartina cynosuroides, Lapham '57, 545, 571 (Plate 2, Fig. 3) ; Babcock '73, 

 97; Patterson '76, 50; Flagg '78, 281; Biciidel '87, 63; Higley and Raddin '91, 

 1P.8; Huett '97, 128; Gleason '07, 182. Spartina michauxiana, Gleason '10, 148; 

 Gates '12, 355; Gleason '12, 45; Sherflf '13, 595. 



Culms smooth, 3 to 6 feet tall; sheaths smooth; ligule mostly a 

 fringe of hairs 2 to 3 mm. long ; blades sharp-pointed, 2 to 4 feet long, 

 6 to 15 mm. wide, rough along the edges and usually involute when 

 dry ; spikes 1 to 4 inches long ; spikelets 7 to 9 mm. long, the first glume 

 about half as long as the awned second glume. 



This is one of the native grasses that appear to be almost as 



abundant today as when the country was first settled. If cut early it 



makes fairly good hay. Its rootstocks make it valuable also as a sand 



binder. 



ILLINOIS SPECIMENS: Without locality, Vaserj. champaign co. Without lo- 

 cality, Percival; Savoy, Gibbs, Sept., 1898; near Mahomet, Burrill and Seymour, 

 Aug., 1880. cook CO. Hyde Park, Chicago, B)p-bcoclc, July, 1874; Thornton, 

 Hill, July, 1865. christian CO. Taylorville, Andrews. DU page CO. Wheatland, 

 Umbach, July, 1909. fulton co. Without locality, Fepoon; Canton, Wolf, jo 

 DAVIESS CO. Without locality, Fepoon. kankakee co. Kankakee, Be Selm, Aug., 

 1913; Kankakee, Hill, July, 1873. lake go. Beach, Umbach, July, 1909; Lake 



