Cosson, Ernest Saint-Charles
Coulter, Thomas
Cowan, John Macqueen
Crane, Peter R.
Crayn, Darren M.
Crépin, François
Crisp, Michael
Croizat, Leon Camille Marius
Cronquist, Arthur
Crosswhite, Frank Samuel
Cuatrecasas, José
Cullen, James
Cupido, Christopher Nelson
Cusson, Pierre
Cyperus L.
D'Arcy, William Gerald
Damboldt, Jürgen
Dandy, James Edgar
Davidian, Hagop Haroutune
Davis, Aaron Paul
Decaisne, Joseph
Degland, Jean-Vincent-Yves
Delaroche, Daniel
Denford, Keith E.
Desfontaines, René Louiche
Desvaux, Étienne-Émile
Desvaux, Nicaise Auguste
Dickie, George
Didukh, Yakiv Petrovich
Diels, Friedrich Ludwig Emil