grasses of row A. 75 



DESCRIPTION. 



Large Fruited Panicum. A stout, glabrous perennial, culms 



smooth, branched above, i to 2\ feet (3-10 dm.) high, with broad lan- 

 ceolate leaves; leaf blade 2 to 5 inches (5-17 cm.) long, 1 to \\ inches 

 (2-4 cm.) wide, cordate, clasping at the base, long acuminate, glabrous on 

 both sides or with a tew scattered strigose hairs, usually ciliate on the 

 serrulate scabrous margins, especially near the base; sheaths glabrous or 

 sparingly pubescent, generall) somewhat ciliate on the margins, shorter 

 than the internodes; ligule very short; iew open flowered panicles, 2 to 

 4 inches (5-15 cm.) long; rachis glabrous, branches alternate, decom- 

 pound, glabrous, spreading erect; spikelets 1 \ to 2 inches (3-4 cm.) 

 long, oval to obovate; first glume one-third to one-halt as long as the 

 spikelet, acute or obtuse; second and third glumes pubescent, turgid, 

 <)-ii nerved; flowering glumes i\ to 1 }f lines (2.5-3 mm.) long, mi- 

 nutelj pubescent at the apex. Moist places. July to August. 



There are intergrading forms between P. macrocarpon and P. lati- 

 folium. The P. latifolium is east of our range generally, but it may 

 be looked for in the eastern halt of the state. 



DISTRIBUTION. 



Iowa. Ames (Carver); Ames (Ball and Sample, Hitchcock, 

 155 Ball, Bessey, Beardslee) ; Iowa City (Hitchcock): Clermont, 

 2048, 2178 (Walker); Johnson County, 3 (Miss Linder, Shimek); 

 Muscatine, 501 (Reppert) ; Winterset (Carver); Dysart (Miss Sir- 

 rine) ; Colfax (Mead) ; Albin (Wheeler), Creston (Andrews). 



North America. Maine, New Jersey, New York ( Washington 

 County, Parry), District of Columbia (Hamilton Hill, Washington; 

 Ball), North Carolina (Duns Alt., Small), (Boynton) Florida; west 

 to Alabama and eastern Tennessee; north to Missouri (St. Louis, Kg- 

 ;_ r ert ; Allenton, Pammel), Iowa, Wisconsin. Minnesota to Quebec and 

 Ontai io. 



IS. PANICUM LATIFOLIUM. 



Panicum latifolium L. Sp. PL 58. 1753 (1 ed.) Watson and Coulter. 

 Cray Man. 632. 1889. (6ed.) Walt. Fl. Car. 73. 1788. Scribner. Bull. U. 

 S. Dept. Agrl Div. Agros. 17: 100. / 396 Scribner ml Merrill. Rhodora. 

 3: 111. Vasey Contr. U. S. Nat. Herb. 3: 33. 



