19J8] The Grasses op Illinois 309 



PEORIA CO. Priiiceville, V. H. Chase, Aug., 1906. richland co. Near Olney, 

 Bidgwmj. vermilion co. Muncie, Mosher, May, 1914. wabash co. Without 

 locality. Shearer. 



Panicum huachcae silvicola Hitchc. and Chase 



Hitchcock and Chase '10, 218. 



This subspecies differs from the species in being taller, more slen- 

 der, and not so pubescent. It is also a softer, grayer green than the 

 species and does not look or feel so harsh. The nodes are bearded 

 with reflexed hairs. The leaves are softer and thinner and less 

 pubescent. 



CHAMPAIGN CO. Mahomet, Gleason 1033 ; Urbana, Gates, Sept., 1907 ; Urbana, 

 Seymour and Waite 1024; Urbana, Mosher, June, 1914. cook co. Orland, Um- 

 bach, Aug., 1909; Palos Park, Vmbach, Sept., 1909; La Grange, Hill, July, 1907; 

 Eiverside, Hill, July, 1907; Englewood, Derr, May, 1885. du page co. Downer's 

 Grove, Umbach 1820. jackson co. Makanda, Gleason 1028, 1030; Grand Tower, 

 Gleason 1031. jo daviess co. Without locality, Pepoon 580 and .01. knox co. 

 Willianisfield, ^'. U. Chase, 1851. la salle ( o. Starved Koi-k, A. Vkase, July, 

 1901. MACON CO. C H. & D. Bridge, CloTcey 2437, 2449 ; Decatur, CloTcey, Aug., 

 1897. MCLEAN CO, Normal, Somes 138. Marshall co. Lawn Eidge, V. H. 

 Chase 1477, 1491. menard co. Without locality. Hall in 1861; Athens, Hall in 

 1861. OGLE CO. Oregon, Waite in 1885; Pine Eock, Waite, June, 1885. peoria 

 CO. Peoria, McDonald, Aug., 1900; Peoria, Robert Bebb, June, 1905; Glasford, 

 Wilcox 42; Peoria, Brendel; Princeville, V. H. Chase 81. piatt co. White Heath, 

 Mosher, July and Oct., 1914. richland go. Parkersburg, Bidgway, June, 1902. 

 ST. CLAIR CO. Mascoutah, Welsch. vermilion co. Muncie, Mosher, Oct., 1914. 

 WABASH CO. Without locality, SchnecTc, July, 1897; without locality. Shearer, 

 June, 1899; Hanging Eock, Ashe and Schneck, July, 1899; Mt. Carmel, Schneclc, 

 July, 1888; Patton, Schneck, June, 1879. 



Panicum implicatum Scribn. 

 (Fig. 75) 



Hitchcock and Chase '10, 213. 



Vernal form with slender culms, 8 to 20 inches tall; culms and 

 sheaths papillose-pubescent; sheaths shorter than the internodes; 

 ligules 4 to 5 mm. long; blades 1 to 2.5 inches long, 3 to 6 mm. wide, 

 with long, spreading pubescence, 3 to 4 mm. long, on the upper sur- 

 face and shorter pubescence on the lower ; panicles small, the axis with 

 long, soft hairs, the branches usually tangled; spikelets 1.5 mm. long, 

 densely pubescent. Autumnal form much branched from the nodes, 

 forming small tufts of leaves, which partially conceal the much re- 

 duced panicles ; culm leaves seldom over an inch long and 2 to 4 mm. 

 in width. 



This species is found in wet meadows, bogs, and swamps. It is a 

 northern species and so far has been found only in the northern half 

 of the state. It closely resembles P. JiuacJiucae as to general appear- 

 ance and habit of growth. 



cook CO. Chicago, Nelson 66. iroquois co. Chebanse, Hill, July, 1870. 

 MASON CO. Manito, /('i/coa; 57. ogle ( 0. Without locality, Jrf/t/e in 1885. rock 

 ISLAND CO. Near Bock Island, McDonald, Sept., 1901, 



