| Manual of the grasses of the United States AS Hitchcock Courier Corporation, 1971 | 3404* | 1971 |
| Standard-species of Linnean genera of Phanerogamae (1753–54) AS Hitchcock, ML Green International Botanical Congress, Cambridge (England) 1929, 110, 1930 | 207 | 1930 |
| The grasses of Ecuador, Peru, and Bolivia AS Hitchcock Contributions from the United States National Herbarium 24 (8), I-XX, 1927 | 197 | 1927 |
| The north American species of panicum AS Hitchcock, MA Chase US Government Printing Office, 1910 | 185 | 1910 |
| Manual of the grasses of the West Indies AS Hitchcock US Department of Agriculture, 1936 | 151 | 1936 |
| The genera of grasses of the United States: with special reference to the economic species AS Hitchcock US Government Printing Office, 1936 | 128 | 1936 |
| Mexican grasses in the United States National Herbarium AS Hitchcock US Government Printing Office 17 (3), 1913 | 87 | 1913 |
| Manual of grasses of the United States, rev. by Agnes Chase AS Hitchcock US Government Printing Office, 1971 | 72 | 1971 |
| Types of American grasses: a study of the American species of grasses described by Linnaeus, Gronovius, Sloane, Swartz, and Michaux AS Hitchcock Contributions from the United States National Herbarium 12 (3), I-V, 1908 | 66 | 1908 |
| Manual of the grasses of the US AS Hitchcock USDA Misc. Pub 200, 1951 | 62 | 1951 |
| Flora of the District of Columbia and vicinity AS Hitchcock, PC Standley US Government Printing Office, 1919 | 56 | 1919 |
| The grasses of Central America AS Hitchcock Plant studies, chiefly tropical American, 1930 | 54 | 1930 |
| Grasses of the west Indies AS Hitchcock, A Chase Contributions from the United States National Herbarium 18 (7), I-XVIII, 1917 | 54 | 1917 |
| A text-book of grasses: with especial reference to the economic species of the United States AS Hitchcock MacMillan, 1914 | 46 | 1914 |
| The North American species of Stipa AS Hitchcock Contributions from the United States National Herbarium 24 (7), 215-262, 1925 | 38 | 1925 |
| The North American species of Aristida AS Hitchcock Contributions from the United States National Herbarium 22 (7), 517-586, 1924 | 38 | 1924 |
| Tropical North American species of Panicum AS Hitchcock, A Chase US Government Printing Office 17 (6), 1915 | 37 | 1915 |
| Grasses of British Guiana AS Hitchcock US Government Printing Office 22 (6), 1922 | 31 | 1922 |
| Species lectotypicae generum Linnaei AS Hitchcock, ML Green Brittonia 6 (1), 114-118, 1947 | 30 | 1947 |
| Gramineae AS Hitchcock Cunningham, Curtiss & Welch, 1912 | 30 | 1912 |
