Johann Müller was a Swiss botanist who was a specialist in lichens. He published under the name Johannes Müller Argoviensis to distinguish himself from other naturalists with similar names.
Per Axel Rydberg was a Swedish-born, American botanist who was the first curator of the New York Botanical Garden Herbarium.
Jean Baptiste Antoine Guillemin was a French botanist.
Lyman Bradford Smith was an American botanist.
Johannes (Hans) Gottfried Hallier was a German botanist born in Jena.
Francis Raymond Fosberg was an American botanist. A prolific collector and author, he played a significant role in the development of coral reef and island studies.
Georges François Reuter was a French botanist and plant collector. He was born in Paris, and died in Geneva.
Georg Hans Emmo Wolfgang Hieronymus (1846–1921) was a European botanist of German extraction. He was born in Silesia and died in Berlin.
Edgar Theodore Wherry (1885–1982) was an American mineralogist, soil scientist and botanist. He had a deep interest in ferns and Sarracenia.
Reid Venable Moran was an American botanist and the curator of botany at the San Diego Natural History Museum from 1957 to 1982.
James Francis Macbride was an American botanist who devoted most of his professional life to the study of the flora of Peru.
Kåre Bremer is a Swedish botanist and academic. He has also been Vice-Chancellor of Stockholm University.
Jesse More Greenman was an American botanist. He specialized in tropical flora, with emphasis on plants from Mexico and Central America. He was an authority on the genus Senecio and noted for his work at the Missouri Botanical Garden.
Pamela Soltis is an American botanist. She is a distinguished professor at the University of Florida, curator at the Florida Museum of Natural History, principal investigator of the Laboratory of Molecular Systematics and Evolutionary Genetics at the Florida Museum of Natural History, and founding director of the University of Florida Biodiversity Institute.
Ira Loren Wiggins was an American botanist, Curator of the Dudley Herbarium, and Director of the Natural History Museum (1940–1962) at Stanford University. He was a Stanford faculty member from 1929 until his retirement in 1964. He was the first recipient of the Fellow's Medal of the California Academy of Sciences. His Flora of Baja California is a standard work on the botany of the Baja peninsula and on the many islands of the Gulf of California.
Thomas Franklin Daniel is an American botanist, and teacher. He is a specialist of the botanical family Acanthaceae. In 1975 he obtained his undergraduate from Duke University. In 1980, he obtained his doctorate at the University of Michigan. In 1981, he was assistant professor. Between 1981 and 1985 he was an assistant curator of the Arizona State University Herbarium.
Hansjörg Eichler was a German-born botanist, educated in Europe, who worked in Europe and Australia, and whose greatest contribution was to Australian botany.
Laurence "Larry" Joseph Dorr is an American botanist and plant collector. He specializes in the systematics of the order Malvales and the family Ericaceae.
Warren Lambert Wagner is an American botanist, a curator of botany, and a leading expert on Onagraceae and plants of the Pacific Islands, especially plants of the Hawaiian Islands.
Amy Yarnell Rossman is an American mycologist and a leading expert in identifying fungi.
