360 titles (books/journals)
1,842 volumes
846,529 pages
165,978 links to protologues
Recent additions 
Botanicus is a freely accessible, Web-based encyclopedia of historic botanical literature from the Missouri Botanical Garden
Library. Botanicus is made possible through support from the W.M. Keck Foundation and the Andrew W. Mellon Foundation.
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- Camper, Petrus,
- Candolle, Alphonse de,
- Candolle, Augustin Pyramus de,
- Cardot, Jules,
- Carey, William,
- Carlander, Christopher,
- Carnegie Institution of Washington.
- Casaretto, Giovanni,
- Casearius, Johannes,
- Cathcart, John Fergusson,
- Cels, Jacques Philippe Martin,
- Centre national de la recherche scientifique (France)
- Cesalpino, Andrea,
- Chailli, Jacques,
- Christ, H.
- Christensen, Carl,
- Christiani de Launoy.
- Clusius, Carolus,
- Cogniaux, Alfred,
- Collin, Gabriel Daniel.
- Colonna, Fabio,
- Commelin, Caspar,
- Commelin, Johannes,
- Cornelium Haak.
- Cotta, J. G.
- Cousin, H.
- Crapelet.
- Cruz, Mário.
- Culpeper, Nicholas,
- Curtis, Charles M.
- Curtis, William,
- Curtis's botanical magazine dedications, 1827-1927 : portraits and biographical notes.