HITCHCOCK AND CHASE — NORTH AMERICAN PANICUM. 285 



Fig. 320. — Distribution of P. scribnerianum. 



North Dakota: Norfolk, Griffiths 871. 



South Dakota: Lead City, Rydberg 1098; Rosebud, Wallace 12. 



Iowa: Ames, Ball 178; Iowa City, Somes 167, 229. 



Nebraska: Weeping Water, Williams 3009; Thedford, Rydberg 1279, 1493; 



Fort Niobrara, T. E. Wilcox in 1890; Mullen, Rydberg 1604. 

 Missouri: Wayne County, Eggert 234; Carter County, Eggert 297; St. Louis,' 



Eggert 249; Washington County, Eggert 295; Monteer, Bush 722, 733 in part, 



4653; Independence, Bush 729, 740; Watson, Bush 737; Dodson, Bush 1659; 



Arlington, Kellogg in 1903; Allenton, Kellogg in 1903; Swan, Bush 4568; 



Westport, Bush 4021; Vale, Bush 3933. 

 Kansas: Osborne City, Shear 85; Manhattan, Hitchcock 2383, 2502, 2511, 2519, 



2525, 3854, PL Kan. 571, 571a, 921. 

 Delaware: Centerville, Commons 281, 282, Chase 3618. 

 Maryland : Glen Echo, House 831 ; 



High Island, Ward in 1879; 



Great Falls, Chase 2865. 

 District of Columbia: Chase3&08, 



Steele in 1901, Ward in 1881 



and 1883. 

 Tennessee: Knoxville, Ruth 74 



in 1898. 

 Arkansas : Benton County, Plank 



48a, 93. 

 Texas : Denison, Bebb 2715 (Hitch- 

 cock Herb.); without locality, 



Johnson in 1886. 

 Oklahoma: Limestone Gap, Butler 19; Sapulpa, Bush 1216, 1222; Flora, Bebb 



2167; Walker, Bebb 1459. 

 Wyoming: Cambria Canyon, A. Nelson 2524; Inyankara Creek, Williams 2577; 



Devils Tower, Griffiths 548; Whalen Canyon, A. Nelson 516. 

 Idaho: Nez Perces County, Sandberg, Heller & MacDougal in 1892. 

 Washington: Wawawai, Elmer 763; Klickitat County, Suksdorfin 1882 and 1883; 



Ophir, Elmer 509; Thurston County, Heller 4058; Roy, Hunter 604a; Walla 



Walla, Wilkes Expl. Exped. 946. 

 British Columbia: Chilliwack Valley, Macoun 26333, 77230; Lake Osoyoos, 



Macoun 77231; Vancouver Island, Macoun 29297. 

 Oregon: Cascades, Kellogg & Harford 1085; Cache Bar, Sheldon 8331; Coos 



County, Hitchcock 2836; Sauvies Island, Howell 63; Snake River at mouth 



of Cache Creek, Sheldon 8194; without locality, Hall. PL Oreg. 672. 

 Colorado: Fort Collins, Baker 36. 



Arizona: Willow Spring, Palmer 561 in 1890; White Mountains, Griffiths 5401. 

 California: Castle Crag, Hitchcock 3074. 



172. Panicum oligosanthes Schult. 



P.anicum pauciflorum Ell. Bot. S. C. & Ga. 1: 120. 1816, not R. Br. 1810. "In 

 Georgia, not very rare." The type, in the Elliott Herbarium, is a single culm begin- 

 ning to branch, with five leaves and an exserted panicle 6 cm. long and 6.5 cm. wide. 

 The accompanying label reads: "Panicum pauciflorum E. Hab: in humidis umbro- 

 sisque. Flor. Ap: Ma." 



Panicum oligosanthes a Schult. Mant. 2 : 256. 1824. Based on P. pauciflorum Ell., 

 the name being changed because of P. pauciflorum R. Br. 



" This name is incorrectly formed: the word should be oliganthum, but since the 

 incorrect form has been sanctioned by usage it seems wiser not now to correct it, 

 especially since to do so would invalidate P. oliganthum Schlecht. 1854. 



