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A longtime University of Kansas botanist, this Great Plains plant expert helped build one of the region’s most important herbarium collections. His work is closely linked with practical field botany, taxonomy, and the flora of central North America.

by Henry S. (Henry Sheldon) Fitch, Ronald L. McGregor
Ronald L. McGregor was an American botanist associated with the University of Kansas. The university’s botany program credits him with serving as herbarium director from 1954 to 1988 and with overseeing a major expansion of the collections there, a legacy strong enough that the university herbarium now bears his name.
His published work is tied to the plants of the Great Plains and nearby regions, including taxonomic and floristic research and collaborative reference works such as Flora of the Great Plains. Records connected with botanical authorship identify him as Ronald Leighton McGregor, and University of Kansas sources note his life dates as 1932–2012.
McGregor’s reputation rests on careful, ground-level scholarship: collecting, classifying, and documenting plants in ways that continue to support researchers, students, and naturalists. Even when readers encounter his name only in a citation or flora, it points to a lifetime spent helping others understand the plant life of North America’s grasslands.