986 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



Richardson, Sir John (17S7-1865). British botanist, who traveled in Canada. 

 Stipa richardsoni. 



Roemer, K. F. (1818-91). German botanist, who collected in Texas, 1844-47. 

 Aristida roemeriana. 



Ross, Edith. Collected in Yellowstone Park. Agrostis rossae. 



Rothrock, J. T. (1839-1922). Professor of botany, University of Pennsylvania. 

 Bouteloua rothrockii. 



Rottboell, C. F. (1727-97). Danish botanist. Rottboellia. 



Roxburgh, William (1759-1815). Scotch botanist, director of the botanical 

 garden at Calcutta. Sorghum vulgar e var. roxburghii. 



Riippel, Edward (1794-1884). German botanist. Pennisetum ruppelii. 



Runyon, Robert (1881- ). Photographer and amateur botanist, Browns- 

 ville, Tex. Digitaria runyoni. 



Saunders, William (1836-1914). Horticulturist, United States Department of 

 Agriculture. Agropyron saundersii. 



Scheele, Adolf (1808-64). German botanist, who described plants from Texas. 

 Setaria scheelei. 



Schreber, J. C. D. (1739-1810). German botanist, who wrote on grasses. 

 Muhlenbergia schreberi. 



Scribner, F. Lamson (1851- ). Agrostologist, United States Department 

 of Agriculture. Scribneria; Agropyron scribneri; Calamagrostis scribneri; Pani- 

 cum scribner ianum; Stipa scribneri. 



Sello (Sellow), Friedrich (1789-1831). German botanist, who traveled in 

 i3razil. Cortaderia selloana. 



Short, C. W. (1794-1863.) Botanist of Kentucky. Festuca shortii. 



Silveus, W. A. (1875- ). Botanist of San Antonio, Tex. Eragrostis silveana. 



Simpson, J. H. (1841-1918). Botanist who collected in Florida. Digitaria 

 simpsoni; Eriochloa michauxii var. simpsoni. 



Smith, C. E. (1820-1900). Botanist, who collected in Michigan. Melica 

 smithii. 



Smith, J. G. (1866- ). Botanist, United States Department of Agriculture, 

 later of Hawaii. Agropyron smithii. 



Stillman, J. D. B. (1819-88). Pioneer botanist of California. Stipa stillmanii. 



Suksdorf, W. M. (1850-1932). Botanist of Bingen, Wash. Bromus suksdorfii. 



Swallen, J. R. (1903- ). Agrostologist, United States Department of 

 Agriculture. Eragrostis swalleni. 



Tharp, B. C. (1885- ). Professor of botany, University of Texas. Sporo- 

 bolus tharpii. 



Thurber, George (1821-90). Botanist of New York, who collected along the 

 Mexican boundary and wrote on the grasses of California. Agrostis thurberiana; 

 Festuca thurberi; Muhlenbergia thurberi; Stipa thurberiana. 



Thurow, F. W. (1852- ' ). Botanist of Waller County, Tex. Panicum 

 thurowii. 



Torrey, John (1796-1873). Physician of New York City and eminent botanist. 

 Melica torreyana; Muhlenbergia torreyana; Muhlenbergia torreyi. 



Tracy, J. P. (1879- ). Botanist of Eureka, Calif. Festuca tracyi. 



Tracy, S. M. (1847-1920). Botanist of Biloxi, Miss., who collected in the 

 Southern and Western States. Andropogon tracyi; Eragrostis tracyi; Poa tracyi. 



Trinius, K. B. von (1778-1844). Agrostologist of St. Petersburg, Russia, who 

 described many American grasses. Bromus trinii. 



Tuckerman, Edward (1817-86). Botanist of New England. Panicum tucker- 

 mani. 



Tweedy, Frank (1854- ). Topographic engineer, United States Geological 

 Survey, collected in the Western States. Bromus pumpellianus var. tweedyi; 

 Calamagrostis tweedyi. 



Urville. See Dumont-d'Urville. 



Vasey, George (1822-93). Botanist, United States Department of Agriculture, 

 eminent agrostologist. Vaseyochloa; Poa vaseyochloa. 



Walter, Thomas (1740-88). Botanist of Charleston, S.C., author of Flora 

 Caroliniana. Echinochloa walteri. 



Webber, Dr. (1740-88). Physician of Sierra Valley, Calif. Oryzopsis webberi. 



Webber, H. J. (1865- ). Botanist, United States Department of Agricul- 

 ture, now of California, who collected in Nebraska and Florida. Panicum web- 

 berianum. 



Werner, W. C. (1852- ). Botanist of Painesville, Ohio. Panicum, werneri. 



Wilcox, T. E. (1840-1932). Army surgeon, who collected in the Western 

 States. Panicum wilcoxiuiium. 



