Creator
- Farlow, William Gilson, 1844-19197
- Fries, Elias, 1794-18787
- Hooker, Joseph Dalton, 1817-19117
- Caradeuc, A. de.6
- Lojka, Hugo, 1845-18876
- Summer, A. G.6
- Wingate, Harold6
- Berkeley, Miles Joseph, 1803-18895
- Caruel, Teodoro5
- Dawson, Frances W.5
- Elwyn, A. L.5
- Engelmann, George, 1809-18845
- Gerard, William R.5
- Gibbes, Lewis Reeves, 1810-18945
- Harvey, William Henry, 1811-18665
- Huger, Benjamin5
- Maury, M. F.5
- Michener, E.5
- Murdock, William5
- Parry, Charles Christopher, 1823-18905