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Margaret Ruth Ensign Lewis (1919 – November 2017) was an American botanist, taxonomist, and professor specializing in California flora.

The International Plant Names Index lists 38 plant names published by Margaret Ruth Ensign.

Publications

• Ensign, Margaret (March 1942). "A Revision of the Celastraceous Genus Forsellesia (Glossopetalon)". American Midland Naturalist. 27 (2): 501. doi:10.2307/2421016.
• Lewis, Harlan; Lewis, Margaret (1953). "New Species and Changes in Nomenclature in the Genus Clarkia (Onagraceae)". Madroño. 12 (2): 33–39.
• Lewis, Harlan; Lewis, Margaret Ensign (1955). "The Genus Clarkia". Univ. Calif. Pub. Bot. 20 (4): 241–392.
• Roberts, Margaret R.; Lewis, Harlan (1955). "Subspeciation in Clarkia biloba". Evolution. 9 (4): 445–454. doi:10.1111/j.1558-5646.1955.tb01554.x.
• Lewis, Harlan; Roberts, Margaret R. (1956). "The Origin of Clarkia lingulata". Evolution. 10 (2): 126–138. doi:10.2307/2405888.

The standard author abbreviations Ensign and M.E.Lewis are used to indicate this person as the author when citing a botanical name.

References

1. "Remembering Botanist Margaret Lewis". botgard.ucla.edu. Mildred E. Mathias Botanical Garden. Retrieved 19 December 2018.
2. "Harvard University Herbaria & Libraries". kiki.huh.harvard.edu. Harvard University. Retrieved 19 December 2018.
3. "Ensign, Margaret Ruth (1919-)". ipni.org. International Plant Names Index. Retrieved 2018-09-30.
4. "Lewis, Margaret Ensign (1919-)". ipni.org. International Plant Names Index. Retrieved 2018-09-30.
5. "Search for Ensign". International Plant Names Index.
6. "Search for M.E.Lewis". International Plant Names Index.

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