Din? CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Gray® as shown by the specimen from ‘‘Pine barrens of New-Jersey,’’ in the Boott 
set of the Gramineae and Cyperaceae now in the Gray Herbarium. This varietal 
name was never published by Gray and P. nitidum was included under P. dichotomum 
in Gray’s Manual from the first to the fifth editions. In the sixth edition the name 
P. mitidum was applied to P. sphaerocarpon Ell., (which was cited as synonym) as 
shown by the description and by specimens in the Gray Herbarium. The interme- 
diate specimens, of which the following are representative, are included in those 
cited below: Ball 69, Bebb 1259, Chase 3089, 3256, 3489, 3611, Hitchcock 1216, 1607, 
Mackenzie 2166, Plank 49, Tracy 13, 4607. 
DISTRIBUTION. 
Sandy soil, Vermont to northern Florida, west to Illinois and Texas, and south 
through Mexico to Venezuela. 
Vermont: Putney, Blanchard 9 (Gray Herb.). 
MassacHusetts: Boston, Swan in 1886; Framingham, Smith 748. 
Connecticut: Southington, Andrews 8, 73; Waterford, Graves 85; Berlin, Bissell 
5585; Portland, Wilson 1435. 
Ru#oveE Isuanp: Providence, Olney in 1868 (Brown Univ. Herb.). 
New Yorr: Niagara County, Townsend 1; Long Island, Bicknell in 1905. 
New Jersey: Berkeley Heights, Mackenzie 2250; Tuckerton, Chase 3611; Wild- 
wood, Chase 3489, 3509; Cape 
May, Pollard in 1897; South 
Amboy, Mackenzie 2166. 
PENNSYLVANIA: Easton, Porter in 
1893 and 1897; Stroudsburg, 
Porter in 1898; Germantown, 
Stone 6; Newtown, Smith 160. 
Oxto: Portsmouth, Kellerman in 
1899 (Ohio State Univ. Herb.). 
Inpiana: Dune Park, Chase 1850, 
V. H. Chase 242. 
Tnunors: Jackson, French in 1906. 
Micuiean: Detroit, Farwell 1388; 
Grand Beach Springs, Hill 88 and 90 in 1908; Magician Lake, Umbach 2153. 
Missourt: St. Louis, Eggert 254; Cliff Cave, Kellogg 9, 11; Swan, Bush 675; 
Eagle Rock, Bush 145. 
Kansas: Cherokee County, Hitchcock Pl. Kans. 883. 
DELAWARE: Centerville, Commons 284, 298; Milton, Commons 350; Rehoboth, 
Commons 49, 50; Lewes, Hitchcock 561. 
MARYLAND: (hecapeaiee Beach, Chase 3256, Hitchcock 1605, 1607, 1615, 1616, 
2408; between Chesapeake Beach and Chesapeake Junction, Hitchcock, 
1626, 1639. 
District oF CotumsBtia: Ball 65, Chase 2401, 2412, Kearney 12, Pollard 398, 
Vasey 34, 111, Ward in 1878, Williams 1, 2. 
VIRGINIA: Mlesonehite, House 1058, Chase in Kneucker Gram. Exs. 553; Four- 
Mile Run, Chase 5432, 5433; Norfolk County, Chase 2332, Kearney 301 in 
part, 1560; Munden, Mackenzie 1663; Virginia Beach, Williams 3098. 
NortH Carorina: Roanoke Island, Chase 3212, 3237; Lake Mattamuskeet, Chase 
3206; Wilmington, Chase 4591, Hitchcock 1426; Chapel Hill, Chase 3074; 
Caraleigh Junction, Chase 3089; Biltmore, Biltmore Herb. 4292b. 
Fic. 274.—Distribution of P. sphaerocarpon. 
a@Gram. & Cyp. 1: no. 30. 1834. 
