Guy L. Nesom (born August 2, 1945)''U.S. Public Records Index'' Vol 2 (Provo, UT: Ancestry.com Operations, Inc.), 2010. is an American writer and botanist. Nesom received his Ph.D. in systematic botany from the

University of North Carolina The University of North Carolina is the Public university, public university system for the state of North Carolina. Overseeing the state's 16 public universities and the North Carolina School of Science and Mathematics, it is commonly referre ...

in 1980, and has since contributed much to the fields of botanical nomenclature, systematics, and evolution. His most notable contributions are probably his works on the

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

, with several papers published throughout the 1990s that argued for multiple generic names to replace the single

polyphyletic A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as Homoplasy, homoplasies ...

name ''

Aster Aster or ASTER may refer to: Biology * ''Aster'' (genus), a genus of flowering plants ** List of ''Aster'' synonyms, other genera formerly included in ''Aster'' and still called asters in English * Aster (cell biology), a cellular structure shap ...

'', and his recent and ongoing contributions to the

Flora of North America The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenla ...

project. Several plant species have been named for Nesom, such as '' Zeltnera nesomii'' of the gentian familyTurner, B. L. (2011)
A new species of ''Zeltnera'' (Gentianaceae) from Tamaulipas, Mexico.
''Phytoneuron'' 61 1-3. and '' Steviopsis nesomii'' of the aster family.Turner, B. L. (1990)
A new species of ''Steviopsis'' (Asteraceae: Eupatorieae) from Nuevo León, México.
''Phytologia'' 68 410-12. Three genera are named in his honor: '' Nesomia'', ''Neonesomia'' (a synonym of ''

Medranoa ''Medranoa'' is a genus of flowering plant in the family Asteraceae, native to northeastern Mexico and Texas. The genus was established in 2004, initially with a single species. It was expanded to five species in 2007, incorporating species form ...

''), and '' Guynesomia''.Turner, B. L. (1991)
''Nesomia chiapensis'' (Asteraceae-Eupatorieae), a new genus and species from Mexico.
''Phytologia'' 71 208-11.Bonifacino, Mauricio & Sancho, Gisela. 2004. Taxon 53(3): 675–678, figures 1–3, 4 [map
/nowiki>.">ap">Bonifacino, Mauricio & Sancho, Gisela. 2004. Taxon 53(3): 675–678, figures 1–3, 4 [map
/nowiki>./ref>Urbatsch, Lowell Edward & Roberts, Roland P. 2004. Sida 21(1): 252–254
/ref>

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* 1945 births American botanical writers American male non-fiction writers Living people University of North Carolina at Chapel Hill alumni 21st-century American botanists {{US-botanist-stub