14 



THE SOURCE OF THE DEUG DIOSCOEEA. 



Delaware. — Newcastle County, William M. Canhy, July, 1893. 



Maryland. — Garrett County, G. A. Eifrick, May. 1902; Montgomery County, 

 A. CJia.sc. 2313 and 2827*, and H. H. Bartlett, 1821 ; Prince Georges County, A. 

 Cliasic, 2215; District of Columbia, E. S. Steele, 67, and H. D. House, 709. 



Virginia. — Alexandria County, A. 8. Hitchcock, September, 1904, and L. H. 

 Dewey, 239; Bedford County, A. H. Curtiss. 43953; Campbell Coimty, 8. B. 

 Buckley; Fairfax County. E. L. Morris, June. 1896, and L. H. Dewey, 232; 

 Loudoun County, A. Chase, 2244; Russell County, C. L. Alsberg, 54 and 120; 

 Smyth County, -/. K. Small, June 4, 1892. 



West Virginia. — Barbour County, J. M. Oreenman, 93; Monongalia County, 

 O. E. Jcnmngs, July 4, 1909; Preston County, J. L. Sheldon, 1454, and E. S. 

 Steele, August 18, 1898; Upshur County, W. M. Pollock, May 30. 1895. and May 

 31 and June 12, 1897. 



Fig. 2. — Map of the eastern portion of the United States, showing the distribution of 



Dioscorca glauca. 



Ohio. — Hamilton County, C. G. Lloyd. 



Illinois— Vnion County, E. S. Earle, 763, and Mrs. C. Butler, August 13. 1880. 



Kentucky. — Fayette County, W. A. Kellerman, in 1882; Greenup County, John 

 Butler, in 1909: Jessamine County, H. Garman; McCracken County, Biltmore 

 Herb., 364 c; Menifee County. //. Garnmn, May 8, 1893; Pulaski County, V. W. 

 Mathews, July 11. 1892; Warren County, S. F. Price, May 21, 1900; Wolfe 

 County. M. L. Didlake, June, 1898. 



Missouri.— ^t. Louis County, 'N. M. Glatfelter (?), 517. 



Tennessee. — Knox County, F. Lamson-Scribncr, May 14, 1SS9. 



North Carolina. — Buncombe County, Biltmore Herb., 364, and F. Crayton and 

 W. W. Eggleston, 4398; Macon County. L. R. Gibbs, in 1881; Orange County, 

 W. W. Ashe, June, 1898; Polk County, J. R. Churchill, May 30, 1899, and E. C. 

 Townsend, April 29, 1897 ; Surry County, H. H. Rusby, June 18, 1909. 



South Carolina.— AxiAavson County, L. R. Gibbs, In 1885; Oconee County, 

 A. P. Anderson, 1502. 

 189 



