Sereno Watson (December 1, 1826 in East Windsor Hill, Connecticut – March 9, 1892 in Cambridge, Massachusetts) was an American botanist. Graduating from Yale in 1847 in Biology, he drifted through various occupations until, in California, he joined the Clarence King Expedition and eventually became its expedition botanist. Appointed by Asa Gray as assistant in the Gray Herbarium of Harvard University in 1873, he later became its curator, a position he maintained until his death. Watson was elected a Fellow of the American Academy of Arts and Sciences in 1874, and a member of the National Academy of Sciences in 1889.
- Botany, in Report of the geological exploration of the 40th parallel made ... by Clarence King, 1871
- Watson, Sereno (1879). "Revision of the North American Liliaceae: Descriptions of Some New Species of North American Plants". Proceedings of the American Academy of Arts and Sciences. XIV: 213–312. doi:10.2307/25138538. JSTOR 25138538. Retrieved January 6, 2014.
- Publications by and about S. Watson on WorldCat
- Dupree, A. Hunter (1988). Asa Gray, American Botanist, Friend of Darwin. Baltimore, MD: Johns Hopkins University Press. pp. 352, 388–393, 391–396. ISBN 978-0-801-83741-8.
- "Book of Members, 1780–2010: Chapter B" (PDF). American Academy of Arts and Sciences. Retrieved September 11, 2016.
- "Sereno Watson". Retrieved September 11, 2016.
- IPNI. S.Watson.
- Biographical sketch at the Gray Herbarium site
- Biographical memoir, National Academy of Sciences
- Obituary, page 441
- Portrait (plate VI) and obituary by John Merle Coulter (137–141)
- Sereno Watson at Find a Grave