417 titles (books/journals)
1,947 volumes
889,221 pages
173,527 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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- East India Company.
- Eaton, Daniel Cady,
- Ecklon, Christian Friedrich,
- Ederschen, Joseph.
- Edgren, Peter Adolf,
- Edman, Joh.
- Edwards, George,
- Edwards, Sydenham,
- Ehret, Georg Dionysius,
- Eichler, August Wilhelm,
- Eisenberger, Nicolaus Friedrich,
- Ekermark, Isaac Vilhelm.
- Ekman, Olof Jacob,
- Elmsly, P.
- Elwes, Henry John,
- Endlicher, István László,
- Endlicher, Stephan,
- Engholm, Jonas Joh.
- Engler, Adolf,
- Epling, Carl,
- Erxleben, Johann Christian Polycarp,
- Ewan, Joseph Andorfer,
- Ewan, Nesta.