191S] The Grasses of Illinois 365 



SON CO. Oquawka, Patterson. mchenry co. Algonquin, Nason, June, 1878. 

 KANKAKEE CO. Kaukakeo, Hill, June, 1873. macoupin co. Carlinville, Robert- 

 son, June, 1884. menard co. "Without locality, Hall in 1874; Athens, Hall in 

 1864. PEORIA CO. Peoria, Brcndcl; Peoria, McDonald, July, 1889. stark co. 

 Wady Petra, V. H. Chase 589. wabash co. Without locality, Schneck, May, 

 1879; without locality. Shearer; Patton, Schneck, June, 1900; Mt. Carniel, Schneck, 

 June, 1881, 1900, 1904 and 1906; Old Palmyra, Schneck, June, 1900. will CO. 

 Joliet, Skeels, June, 1904. 



SplienopJiolis pennsylvanica (L.) Hitchc. — This species is described 

 as Trisetum pennsylvanicum in Britton's Manual (1907), where it is 

 reported from Illinois. It was also reported from Illinois by several of 

 the earlier authors as Trisetum palustre: Lapham '57, 548, 589; Pat- 

 terson '76, 52 ; Flagg '78, 284 and Brendel '87, 88. It is also reported 

 from Illinois in Gray's Manual (7th ed.) under the name 8. palustris 

 (Mickx.) Scribn. No Illinois specimens are contained in the herbaria 

 examined, nor are there any in the herbarium of the New York Botan- 

 ical Garden or in the Gray Herbarium. 



34. KOELERIA Pers. 



This genus includes a single species which was found in dry places 

 on the western prairies. It grows in large bunches, with narrow leaves 

 and shining, spike-like panicles which are aliout the length of those of 

 timothy, but are thicker, interrupted, and not quite cylindrical. The 

 spikelets are 2- to 4-flowered, the glumes slightly shorter thaii the 

 florets. 



Koeleria cristata (L.) Pers. 



(Fig. 184) 



Lapham '57, 546, 575; Babcock '73, 97; Patterson '76, 50; Flagg '78, 281; 

 Brendel '87, 63; Higley and Eaddin '91, 143; Gleason '10, 148; Gates '12, 355. 



Culms 1 to 2.5 feet tall, densely short pubescent just belov/ the 



panicle, otherwise smooth ; leaves mostly clustered at the base ; sheaths 



pubescent ; ligules inconspicuous or lacking ; blades 1 to 12 inches long, 



1 to 5 mm. wide, generally rough and more or less pubescent, becoming 



involute when dry ; panicle pale green and shining ; spikelets rough, 4 



to 5 mm. long. 



ILLINOIS SPECIMENS: Without locality, Vasey; without locality, Hall; south- 

 ern Illinois, Lapham in 1857. champaign co. Champaign, Waite, June, 1886; 

 Champaign, Seymour, June, 1884. christian co. Taylorville, Andreivs. cook 

 CO. Rogers Park, Johnson, July, 1890. pulton co. Without locality, Pepoon. 

 JACKSON CO. Makanda, Gleason, June, 1903. JO daviess co. Without locality, 

 Pepoon, July, 1908; Hanover, Gleason and Gates 2533. kankakee co. Kanka- 

 kee, Hill, 47 in 1871. knox co. Williamsfield, F. H. Chase 1842. lake co. 

 Waukegan, Gates 2467; Beach, Gates 2763; Eockefeller, Gates 1740. mchenry 

 CO. Algonquin, Nason, June, 1878. macoupin co. Carlinville, Boiertson, June, 

 1884. MARION CO. Without locality, M. S. Bebb in 1860. Marshall co. Near 

 Lawn Ridge, V. H. Chase 1382. peoria co. Peoria, McDonald, June, 1890; Peo- 

 ria, Brendel. ST. clair co. Mascoutah, Welsch. stark co. East of Wady 

 Petra, V. H. Chase 28; Wady Petra, F. H. Chase 1382 and 1496. wabash co. 

 Without locality. Shearer. 



