IDIS] The Grasses of Illinois 405 



I)laiits were observed within a thirty-mile radius of Urbana ; now this 

 species can be found along all railway tracks, around elevators, and in 

 Avaste places generally. As it is likely to become a serious pest in the 

 state, some pains should be taken to eradicate it when first observed. 

 It is an annual species, and should be easily controlled. 



CHAMPAIGN CO. St. Joseph, Moslicr, June, 1914 and 1915; Champaign, 

 Mosher, May, 1913; Urbana, Mosher, May, 1915; Urbana, Trelease, May, 1914. 

 Seymour, Mosher, June, 1914. cook go. Hyde Park, Chicago, A. Chase, June, 

 1903. EDGAR CO. Scottland, Dauson, May, 1914. JO daviess CO. Without local- 

 ity, Pepoon. PIATT CO. White Heath, Mosher, May, 1914. stark co. North of 

 Wady Petra, V. H. Chase 1203. tazewell co. Hilton, McDonald, June, 1889. 

 vermilion CO. Muncie, Mosher, May, 1914. wabash co, Mt. Carmel, SchnecTc, 

 May, 1906; between Mt. Carmel and Paris, SehnecTc, June, 1906. 



Bromus villosus Forsk. 



Culms 1 to 3 feet tall, smooth; sheaths softly pilose-pubescent; 

 ligule 3 to 4 ram. long; blades pilose, 8 to 10 inches long, 3 to 5 mm. 

 broad ; panicle erect or somewhat drooping, rather narrow at first but 

 open in flower; spikelets 3.5 to 5 cm. long; drooping; glumes smooth; 

 lemma scabrous, 25 to 30 mm. long exclusive of the awn ; awn stout, 

 scabrous, 3.5 to 5 mm. long. The plants are annuals, easily distin- 

 guished by the long, scabrous awns. 



This is a Mediterranean species w^hich is now abundant in Califor- 

 nia, and has recently appeared in Maryland. It is one of the worst 

 weeds which has been introduced into the United States. Not only 

 does it spread rapidly, but the long, stiff, scabrous awns of the fallen 

 florets injure the lining of the mouth and nostrils of grazing cattle. 

 Every precaution should be taken to prevent this species from becom- 

 ing established in Illinois. 



cook CO. In one vacant lot, Cuyler, Chicago, Gates, June, 1905. 



58. LOLIUM L. 



Rye Grass. Darnel 



This genus includes both annuals and perennials introduced from 

 the Old World. The perennial species are cultivated, but frequently 

 escape and establish themselves in certain localities. The inflores- 

 cence consists of long spikes. The spikelets are several-flowered and 

 are placed edgewise to the axis. The glume next the axis is wanting, 

 except in the terminal spikelet. The leaves are long and narrow, often 

 showing small projections, called auricles, at the base. The ligules are 

 membranous. 



First glume shorter than the spikelet. 



Lemmas awned. L.. rmdtiflorum 



Lemmas awnless. L. percnne 



First glume as long as, or longer than the spikelet. L. temulentum 



