Names
- Lehmann, Ernst, 1880-19571
- Lilly Library1
- Little, Clarence C. (Clarence Cook), 1888-1971[remove]1
- Longley, William H. (William Harding), 1881-19371
- Lotsy, Johannes Paulus, 1867-19311
- Lutz, Anne M., 1871-19381
- MacDowell, E. Carleton (Edwin Carleton), 1887-19731
- Macfarlane, John Muirhead, 1855-19431
- Maeda, Takeshige1
- Martens, Pierre (botanist)1
- McClintock, Barbara, 1902-19921
- McClung, C. E. (Clarence Erwin), 1870-19461
- Modilewski, J.1
- Morgan, Thomas Hunt, 1866-19451
- Munz, Philip A. (Philip Alexander), 1892-19741
- Navashin, M. S. (Mikhail Sergeevich)1
- Nebel, Bernard Rudolf, 1901-19631
- Oehlkers, Friedrich, 1890-19711
- Osborn, Fairfield, 1887-19691
- Peirce, George James, 1868-19541