156 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Fig. 141. — Distribution of P. linearifolium. 

 Plummers Island, Hitchcock 597; Great 



New York: Thousand Islands, Robinson <Sc Maxon 20; Oxford, Coville in 1884; 



Washington County, Burnham 24; Hempstead, Bicknell in 1903; Jamaica, 



Bicknell in 1905. 

 Ontario: Gait, HerriotM. 

 New Jersey: Wildwood, Pollard in 1897; Morris County, Mackenzie 1339, 1398; 



Springdale, Pretz 1882. 

 Pennsylvania: Newtown, Smith 156; York County, Rose & Painter 8153. 

 Ohio: Barnesville, Laughlin 6906. 



Indiana: Wells County, Beam in 1901; Kosciusko County, Beam 3218. 

 Illinois: Wheaton, Moffatt 255 in 1893; Makanda, Gleason in 1903; Cobden, 



Waite in 1885. 

 Michigan: Keweenaw County, Farwell 597; Agricultural College, Lake in 1888. 

 Minnesota: Lake Kilpatrick, Bal- 

 lard in 1893 (Univ. Minn. 



Herb.). 

 Missouri: Monteer, Bush 731 in 



part, 742, 2881a, 4734; Eagle 



Rock, Bush 153; Pleasant 



Grove, Bush 320; Carthage, 



Bush 1555; Swan, Bush 4533, 



4549; Chadwick, Bush 4411, 



4411A; Pilot Knob, Ward in 



1878. 

 Kansas: Manhattan, Hitchcock 



2506, PI. Kans. 880. 

 Maryland: Cabin John, Chase 5411 



Falls, Chase 2303. 

 District op Columbia: Pollard in 1897, Vasey in 1882. 

 West Virginia: Harpers Ferry, Hitchcock in 1905. 

 Georgia: Silver Creek, Biltmore Herb. 7079a (Biltmore Herb.). 

 Kentucky: Lexington, Short 8 (Gray Herb.). 

 Mississippi: Without locality, Johnson in 1886. 

 Arkansas: Benton County, Plank 45, 55, 96, 100, 143, 157; northwest Arkansas, 



Harvey 7. 

 Louisiana: New Orleans, Ridell (Gray Herb.). 

 Texas: Palestine, Plank 40; Jacksonville, Plank in 1894; without locality, 



Nealley in 1890, Wright (Gray Herb.). 

 Oklahoma: Sapulpa, Bush 1107 in 1895 (Mo. Bot. Gard. Herb.). 



85. Panicum werneri Scribn. 



Panicum werneri Scribn. in Britt. & Brown, Illust. Fl. 3 : 501./. 268b. 1898. "Dry 

 knolls in swamps, New York and Ohio." The type, in Hitchcock's herbarium, is a 

 specimen collected by William C. W'erner, near Painesville, Ohio, 1889, no. 60. It 

 consists of eight simple culms, mostly lacking the base, glabrous except for the sparsely 

 bearded nodes, with over-mature panicles; spikelets almost glabrous, the sparse hairs 

 obscure. 



Panicum delawarense Ashe, N. C. Agr. Exp. Sta. Bull. 175: 116. 1900. "Dry soil 

 near Centreville, Del. Collected by A. Commons, July 6, 1878." The type, in 

 Ashe's herbarium, consists of four solitary culms with long-exserted, over-mature 

 panicles, and sparsely pubescent spikelets. 



description. 



Vernal form similar to that of P. linearifolium, typical specimens differing as follows-' 

 Culms stiffer, nodes usually sparingly pilose, sheaths glabrous, often shorter than the 

 internodes; blades firmer, shorter and wider, 15 cm. long or less, the lower culm bladea 



