Lyman David Benson (1909–1993) was an American botanist and author of Taxon names. He established roughly 500 names for cacti as well as 14 other taxon names.

Works

• 1957. Plant Classification. Ed. Heath, Boston. 688 pages.
• 1969. The Cacti of Arizona. 3ª ed. U.Arizona, Tucson. 218 pages. ISBN 0-8165-0509-8
• 1969. The Native Cacti of California. Ed. Stan. U, Stanford. 243 pages. ISBN 0-8047-0696-4
• 1981. Trees and Shrubs of the Southwestern Deserts. Ed. Univ. of Arizona. ISBN 0-8165-0591-8
• 1982. The Cacti of the United States and Canada. Stanford University Press. 1044 pages. ISBN 0-8047-0863-0

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  Justicia candicans
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  Celtis reticulata