1918] The Grasses of Illinois 403 



This is a native perennial species usually found in dry, waste 



places, sometimes in woods and shady places. It is distinguished from 



all other Illinois species by the copious silky pubescence of foliage and 



spikelets. 



ILLINOIS SPECIMENS: Without locality, Vasey. du page co. Wheatland, 

 Umbach, July, 1898. jackson co. Without locality, Laphavi in 1857. JO daviess 

 CO. Without locality, northern part, Pepoon 51. lake co. Beach, Gates 2762; 

 marsh near Eockefeller, Gates 1741; between Wiiithrop Harbor and Beach, Gates, 

 June, 1908. mchenry CO. Algonquin, Nason, July, 1878. menard CO. Athens, 

 Uall. PEORIA CO. Peoria, Brendel in 1857. 



Bromus pratensis Lam. 



(Fig. 258) 



Culms 6 inches to 2 feet tall, smooth or slightly pubescent ; lower 

 sheaths overlapping and the upper shorter than the internodes, pu- 

 bescent ; blades 4 to 10 inches long, 4 to 7 mm. wide, pubescent on both 

 surfaces; panicle erect, rather narrow; spikelets 6- to 10-flowcred; 

 lemma 9 to 10 mm. long, short pubescent, scabrous; awn 5 to 8 mm. 

 long; second glume 5- to 7-nerved. 



An annual species introduced from Europe, but only occasionally 

 found in the Middle West. 



vermilion CO. Muncie, Mosher, May, 1914. wabash co. Near Mt. Carniel, 

 Shearer. 



Bromus purgans L. 



(Fig. 259) 



Bromus ciliatus var. purgans, Higley and Eaddin '91, 14G. Bromus incamis, 

 Gates '12, 355, 



Culms fairly stout, 2 to 5 feet tall ; sheaths retrorsely pubescent ; 

 blades 6 to 12 inches long, 5 to 15 mm. wide, usually short pubescent 

 on the upper surface ; panicle spreading, usually large and nodding ; 

 spikelets 7- to 11-flowered; glumes sparsely pubescent, the second 3- 

 nerved; lemmas 10 to 12 nun. long, pubescent over entire surface, the 

 awn 4 to 6 mm. long. 



This species is a native of the state. It is usually found in damp 

 shaded places. 



CHAMPAIGN CO. Urbana, Mosher, May, 1915. christian co. Taylor ville, 

 Andrews, cook co. Beverly Hills, E. Beljb, Sept., 1903; Bowmanvil Woods, 

 Chicago, Gates, June, 1908; River Grove, Bill 68 in 1897. fulton co. Canton, 

 Wolf, jo DAVIESS CO. Without locality, Pepoon .07. knox co. Williamsfield, 

 V. H. Chase 1839. la salle co. Starved Eock, A. Chase, July, 1901. macoupin 

 CO. Without locality, Koberisom, Aug., 1883. Marshall co. Near Lawn Eidge, 

 V. n. Chase 1487. 'peoria co. Peoria, Brendel; Peoria, McDonald, July, 1904. 

 ST. CLAIR CO. Mascoutah, Welsch. stark co. Near Wady Petra, V. H. Chase 

 640, 1538. vermilion co. Muncie, Mosher, May, 1914. wabash co. Without 

 locality, Shearer, May, 1899. Hanging Eock, Schneck, July, 1905; Grand Eapids, 

 SchnecJc, Aug., 1900. 



Bromus purgans incanus Shear. — This variety differs from the 



si)ecies in having densely pulieseent or velvety sheaths. 



